JP3182342B2 - Foreign currency converter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the conversion of foreign currency (US dollar, British sterling pound, German mark and French franc) turnover into Japanese yen, or vice versa, as well as foreign standard time and Japanese standard time. The present invention relates to a foreign currency converter for converting time, which can be known by associating with a currency converter.

[0002]

2. Description of the Related Art When traveling abroad and purchasing goods in a foreign country, for example, it is often desired to instantly know how much 45 pounds of British sterling pounds will be converted into Japanese yen. In the past, mental arithmetic was used to convert foreign currency,
The resulting value is incorrect. While traveling abroad,
For example, to call Japan 9
Often I want to know what time is in Japan time. Such a need frequently arises even when not traveling abroad.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a foreign currency converter which has a function of converting foreign currency instantaneously and easily, and having a function of easily calculating conversion of time with foreign countries. To provide.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a rigid paper made of flat paper or synthetic resin having a thickness of about 1 to 2 mm and a rectangular shape having a short vertical side of about 5.5 cm and a horizontal long side of about 9 cm. With respect to the card-shaped substrate and the center position of the short side of the substrate, the upper end of the substrate is endlessly rotatable around one long side and is rotatable around the substrate. The thickness of the substrate is selected to be sufficiently small compared to the length in the direction in which the belt is rotated, and the thickness of the substrate in the vicinity of one side in the width direction of the belt. A first logarithmic scale 6 extends over both surfaces 4 and 5 of one circumference L at the upper part.
Is displayed above the first logarithmic scale 6 from left to right on one surface 4 of the substrate, in the following order: (a) 1 German mark, 1 US dollar, 1 British sterling pound, The figures of the currency amount of the Japanese yen exchanged for French francs are changed from 65 to 75, 90 to 110, 150 to 170, and 19 to about 20 to 1 to 10. And "DM" for 1 German Mark, 1 US Dollar, 1 British Sterling Pound, and 1 French Franc,
The characters "US $", "STG", and "FF" are displayed. (B) Transaction in Japanese yen to be read on the band at the position corresponding to the first logarithmic numeral "1". A character “￥” indicating the display position of the height is displayed. Above the first logarithmic scale 6, 1
The remainder of the French franc, about 20 to 22, is 1 to 1
The digit is changed to a value up to 0 and displayed, and a character “FF” representing one French franc is displayed. At the top of the band equal to the perimeter L, the foreign currency is passed over the entire circumference of the band. Is changed to a value from 1 to 10 and the second logarithmic scale 10 is the reciprocal of the first logarithmic scale.
In the band, characters 15 called “foreign currency” indicating that the second logarithmic scale is a foreign currency are spaced apart in the circumferential direction, and the board 15 is provided at a plurality of places below the second logarithmic scale 10. Are displayed so that they can be seen from both surfaces of the band, and the band has "3", "6", "9",
"12", "15", "18", "21" and "2"
The four time display area portions M1 and M2 in which each natural number of "4" is displayed at equal intervals in the circumferential direction are formed continuously in the circumferential direction.
, The natural numbers are arranged and displayed so as to increase in value from left to right, and the natural number “24” of one time display area portion M1 and the leftmost end of the other time display area portion M2 And the interval between the natural number “24” of the other time display area portion M2 and the leftmost end of the one time display area portion M1 are selected to be equal to the interval of the natural numbers. Is formed on both surfaces 4 and 5 of the substrate, below the band,
A world map display area is formed in which a world map in which geographical locations correspond to each natural number in the time display area of the belt is displayed, and the world map has an upper part in the north, a lower part in the south, and a horizontal direction. Is the east-west direction, the vertical direction is parallel to the earth's rotation axis, Japan is displayed in the approximate center of the board in the horizontal direction, and it is spread over 360 degrees around the earth's rotation axis over almost the entire area between both ends in the horizontal direction And the city names "LONDON", "PARIS", "JAPA"
N "," SYDNEY "," ANCHORAGE ",
"LOS ANGELES", "NEW YORK" and "RIO DE JANEIRO" are displayed almost in this order from left to right, respectively.

According to the present invention, A, one of the first logarithmic numbers displayed on the substrate, matches B, one of the second logarithmic numbers displayed on the band. Then, after rotating the band, the second logarithmic scale number C corresponding to the first logarithmic scale number "1" can be read as a value obtained by multiplying A and B. By substituting the numerical value of the amount of Japanese yen exchanged for one unit of foreign currency into A, and substituting the numerical value of the trading volume of foreign currency into B, using the multiplication procedure described above, The numerical value C of the transaction amount in Japanese yen can be obtained easily and quickly. In addition, the result of division in addition to multiplication can be obtained quickly and easily by a predetermined operation.

The present invention corresponds to the embodiment shown in FIGS. 1 to 5 and shows a numerical value (165 yen) of a currency amount of Japanese yen to be exchanged for one unit of foreign currency (one pound in Britain) on the first logarithmic scale of the substrate. Is displayed, and the numerical value of the foreign currency transaction volume on the second logarithmic scale of the belt (for example, the price of the article to be purchased is 4)
5 pounds). The second logarithmic scale of the band is set by the character corresponding to the number "1" on the first logarithmic scale of the board.
Is displayed, the digits may be adjusted by mental arithmetic and the Japanese yen may be read. Thus, 165 × 45 = 742
5 yen is calculated, and currency conversion is performed. Further, it can be determined at a glance that the value displayed on the second logarithmic scale is a foreign currency.

[0007] In a state where a natural number of 1 to 24 indicating the time of the band is associated with a location which is a geographical point of the world map displayed in the world map area on one surface of the substrate, other locations on the world map are displayed. The time of the point and the time difference between the geographical points can be easily and quickly known. Further, since the world map is displayed on the board, even a foreigner who cannot understand the language can easily know the time and the time difference of each point.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view of a slide rule 1 according to an embodiment of the present invention, FIG. 2 is a rear view of the slide rule 1 in FIG. 1, and FIG. III
FIG. 4 is a sectional view taken along line III-IV in FIG. 3, and FIG. 4 is a sectional view taken along line IV-IV in FIG. This slide rule 1
1 shows a card-shaped substrate 2 and the substrate 2 horizontally (FIGS. 1 and 2
(Left and right directions) and an endless band 3 that is rotatably provided around the substrate 2 so as to surround the substrate 2 in the circumferential direction. The longitudinal length L1 of the substrate 2 is about 5.5 cm,
Its lateral length L2 is about 9 cm, its thickness is about 1-2 mm, and it is made of paper or synthetic resin and is rigid. On each of the surfaces 4 and 5 of the substrate 2, a first logarithmic scale 6 is displayed on the both surfaces 4 and 5 of the circumference L of one circumference of the substrate 2 with natural numbers less than 10 graduated. The band 3 is made of a material such as a transparent synthetic resin, such as nylon or polyethylene, is a thin film, and has flexibility and translucency. However, the translucency may be colorless and transparent, or may be mixed with other colors such as light pink.

FIG. 5 shows a development of the band 3 and the first logarithm 6 in the circumferential direction. The longitudinal ends 8 and 9 of the band 3 in FIG. 5 are connected. In this band 3, the second logarithmic scale 10 is graduated in a direction opposite to the first logarithmic scale 6 in the circumferential direction over the entire circumference of the band 3 equal to the circumferential length L. Is displayed. Further, in order to prevent the strip 3 from coming off the substrate 2, a pair of small guide grooves 16 and 17 extending in the vertical direction are formed at both lateral ends of the substrate 2 corresponding to the strip 3 respectively.

Thus, "A" which is one of the numbers of the first logarithmic scale 6 of the substrate 2 matches "B" which is one of the numbers of the second logarithmic scale 10 of the band 3. After rotating the band 3 in the circumferential direction, the number “1” of the first logarithmic scale 6
Can be read as a value obtained by multiplying the number “C” of the second logarithmic scale 10 corresponding to “A” by “A” and “B”. That is, by substituting a value to be raised to “A” and “B” and a value to be raised, respectively, and operating the band 3, the product “A” and “B” of the two values “A” and “B” arbitrarily selected, respectively. C "can be easily and quickly read. Also, after rotating the band 3 so that the number “1” of the first logarithm 6 of the substrate 2 matches one of the scales “D” of the second logarithm 10 of the band 3. "E" which is one of the scales of the first logarithmic scale 6
Can be read as a value obtained by dividing the scale “F” of the second logarithmic scale 10 corresponding to “D” by “D” and “E”. That is, by substituting the values to be raised and the values to be raised to “D” and “E”, respectively, and operating the band 3 as described above, two values “D”, arbitrarily selected respectively are obtained.
The quotient “F” of “E” can be read easily and quickly.

Above the first logarithmic scale 6 on both surfaces 4 and 5 of the substrate 2 of the slide rule 1 (upward in FIGS. 1, 2 and 5),
Currency character 13 (“DM” 1 German mark = 65 to 65), which is the numerical value of the currency amount of the Japanese yen exchanged for one unit of foreign currency
75, "FF" 1 French franc = 19-22, "ST
G "1 British Sterling Pound = 150-170,
“US $ 1 US $ = 90-110” is displayed at each position corresponding to the numerical value of the first logarithmic scale 6. At the position corresponding to the number "1" of the first logarithmic scale 6, the band 3
A circle character 14 indicating the display position of the transaction amount in Japanese yen to be read is displayed. Thus, a foreign currency converter according to an embodiment of the present invention can be configured.
A foreign currency character 15 indicating that the second logarithmic scale 10 is a foreign currency is displayed on the band 3 of the foreign currency converter. Thus, a currency converter according to an embodiment of the present invention can be configured.

For example, as shown in FIGS. 1 and 2, the first logarithmic scale 6 of the substrate 2 has a numerical value "165" of the currency amount of the Japanese yen to be exchanged for one unit of foreign currency (for example, one pound in Britain). Is displayed, and the logarithmic scale indicating the numerical value of the foreign currency transaction volume (for example, the price of the article to be purchased "45" pounds) according to the second logarithmic scale 10 of the band 3 is displayed. Let it. In the direction indicated by the circle character 14 corresponding to the number “1” of the first logarithmic scale 6 of the substrate 2, the trading volume “7425” of the above trading volume in Japanese yen is displayed on the second logarithmic scale 10 of the band 3. Is done. By adjusting the digits by mental arithmetic, the transaction volume in Japanese yen displayed on the second logarithmic scale 10 of the belt 3 can be 7425 yen. As a result, 165 × 45 = 7425 is calculated, and currency conversion is performed. Further, the foreign currency conversion can be performed quickly and easily by the above-described operation procedure.

The substrate 2 is about 9 cm wide by about 5.5 c long.
Since it is in the form of a thin, m-thousand credit card, the slide rule 1 or foreign currency converter or currency converter is easy to handle, and can be inserted, for example, into a wallet notebook, and is easy to use.

Since the band 3 is fitted in each of the guide grooves 16 and 17 retracted inward from the respective end surfaces at both ends in the lateral direction of the substrate 2, frictional contact between the band 3 and another object occurs. It is possible to prevent the band 3 from easily deviating from the accurately positioned position.

The endless strip 3 is formed with each of the guide grooves 16,
17, it is folded back at an angle close to 360 °, so that even when the band 3 is rotated, the band 3 is prevented from shifting or coming off.

As described above, since the slide rule 1, the foreign currency converter or the currency converter is constituted by the substrate 2 and the band 3, the configuration is simple. In addition, the belt 3 can be easily rotated with a thumb or forefinger, for example, and can be accurately positioned at an arbitrary position, so that the operability is excellent. The first logarithmic scale 6 is displayed over both surfaces of the circumference L of one circumference of the substrate. Since the substrate 2 is not configured to extend further in the horizontal direction, for example, the size of the substrate 2 is the size of a credit card. Even if it is formed in a shape, by displaying the first logarithmic scale 6 as large as possible, it is possible to easily correspond to each numerical value of the second logarithmic scale 10 of the band 2. In this way, the slide rule 1 of the present invention can be made as small as possible, and the numerical values to be read can be clearly seen with good operability. As described above, the substrate 2 is about 9
The slide rule 1 formed in the shape of a credit card of about 5.5 cm wide by 5.5 cm is lightweight, small, and excellent in portability. The slide rule 1 thus formed can be easily operated with one hand even while traveling by airplane or car or in a crowded place.

Since the thickness of the substrate 2 is selected to be sufficiently smaller than the length in the direction in which the band 3 is rotated, each of the second logarithms 10 displayed on the band 3 has a thickness of 1 to 10. Natural numbers can be displayed at regular intervals. Therefore, the belt 3 on which the second logarithm 10 is displayed is arbitrarily rotated and moved,
The excellent effect of being able to obtain accurately calculated values is achieved. If the thickness of the substrate 2 is a large value that cannot be ignored with respect to the length in the direction in which the strip is rotated, the scale of the second logarithmic scale 10 has unequally spaced portions. In other words, when this portion exists on both surfaces of the substrate 2, it is impossible to obtain an accurately calculated value. The present invention can solve such an important problem. Since the band 3 is in the form of a thin film, has flexibility, and is provided so as to endlessly surround the substrate 2, a small piece of paper is placed between the band 3 and one surface of the substrate 2. For example, it is possible to insert a boarding ticket or the like, and there is no risk of losing such a piece of paper at the time of traveling, which is convenient. And this band 3
Can be small, so that the material of the band 3 can be reduced. As an embodiment of the present invention, FIGS.
A world map 24 is displayed in the world map display area 23 which is the remaining area of the area occupied by the first logarithmic scale 6 and the band 3 on both surfaces 4 and 5 of the board 2 of the slide rule 1 shown in FIG.
The world map 24 has an upper part in the north, a lower part in the south, and a horizontal direction in the east-west direction. The vertical direction in FIGS. 1 and 2 is parallel to the rotation axis of the earth. It is developed around 360 degrees around the rotation axis of the earth around 25. The world map 24 includes a first scale 26 for dividing the world map 24 into 24 equal parts in the vertical direction and graduations, a continent of Eurasia 27, a continent of North America 28, a continent of South America 29, and a continent of Africa 3
0, the Australian continent 31 and the like are displayed by the Mercator projection, and the city mark 4 is displayed at a predetermined position on the map.
0 and the city name 41 are displayed. In the strip 3 of the slide rule 1, the time display area 33, which is the remaining area of the area occupied by the second logarithmic scale 10, has a 24-hour time corresponding to each of the surfaces 4 and 5 of the substrate 2. A multiple of 3 of the natural numbers 1 to 24 (3, 6, 9, 12, 1
5, 18, 21, 24) and a second scale 35 at a time adjacent to one end 34 (see FIG. 5) perpendicular to the circumferential direction of the band. The multiple of 3 is arranged and displayed so as to increase in value from left to right on one surface 4 of the substrate 2. The band 3 also includes two time display area portions M1 and M displayed at equal intervals in the circumferential direction.
2 are connected in the circumferential direction. Time display area part M
The interval between the scale of the natural number "24" of 1 and the first scale (the leftmost scale of the M2 area in FIG. 5) of the second scale 35 displayed in the time display area M2 and the time display area M2 The interval between the scale of the natural number "24" and the first scale (the leftmost scale of the M1 area in FIG. 5) of the second scale 35 displayed in the time display area M1 is 1 to 2 of the second scale 35. A value equal to the interval of each of the 24th scale is selected and displayed. This constitutes a slide rule that also serves as time conversion. The slide rule that also serves as time conversion is applicable to any part of the time display area portions M1 and M2 facing one surface 4 or 5 of the substrate 2.
A continuous natural number can be provided on this one surface 4 or 5. That is, for example, the time display area portion M
1 to 20 are arranged as shown in FIG. 1 or FIG. 2 and the first to twentieth scales of the time display area portion M2 are arranged as shown in FIG. 4 or 5 can be arranged. For example, when the Japan time is 7:00 am, as shown in FIG. 1, a scale 36 corresponding to Japan 25 on the first scale 26 of the substrate 2 and a seventh scale 35 of the second scale 35 corresponding to 7:00 on the band 3 as shown in FIG. By matching the second scale, for example, in London 38, it is possible to easily know that it is 10:00 pm as indicated by the second scale of the second scale 35. Similarly, at other times, the slide rule that also serves as time conversion can easily and accurately know the time or time difference corresponding to a plurality of geographical locations in addition to multiplication and division. In the vicinity of one side in the width direction of the band, the upper surface of the substrate extends over both surfaces 4 and 5 having a circumference L of one circumference.
A first logarithmic scale 6 is displayed. Above the first logarithmic scale 6, in order from left to right, on one surface 4 of the substrate, (a) exchange foreign currency 1 German mark, 1 US dollar, 1 British sterling pound, 1 French franc Numerical values of the currency amount of the Japanese yen 65 to 75, 90 to 110, 150 to 170, and 19 to about 20 are displayed with their digits changed to values of 1 to 10. In addition, "DM" stands for 1 German mark, 1 US dollar, 1 British sterling pound, and 1 French franc,
The characters "US $", "STG", and "FF" are displayed. (B) Transaction in Japanese yen to be read on the band at the position corresponding to the first logarithmic numeral "1". A character “￥” indicating a high display position is displayed. Above the first logarithmic scale 6 and also on the left end on the other surface 5 of the substrate,
The remainder of the French franc, approximately 20 to 22, is displayed with the digits changed to values from 1 to 10 and 1
A character "FF" representing French Franc is displayed. On the upper part of the band equal to the perimeter L, over the entire circumference of the band, the numerical value of the transaction amount in foreign currency is changed to a value from 1 to 10 and the second number is the inverse of the first logarithmic scale. Is displayed as a logarithmic scale 10. On the band, characters 15 called "foreign currency" indicating that the second logarithmic scale is a foreign currency are spaced from each other in the circumferential direction at a plurality of positions below the second logarithmic scale 10 from both surfaces of the substrate. It is displayed so that you can see it. In the lower part of the band, "3"
“6”, “9”, “12”, “15”, “18”, “2”
Two time display area portions M in which natural numbers “1” and “24” are displayed at equal intervals in the circumferential direction, respectively.
1 and M2 are arranged in the circumferential direction, and in each of the time display area portions M1 and M2, the natural numbers are arranged and displayed so as to become larger as going from left to right. The interval between the natural number "24" of the display area portion M1 and the left end of the other time display area section M2, and the natural number "24" of the other time display area section M2 and the left end of the one time display area section M1 A time display area is formed in which the interval between the two is selected to be equal to the interval of the natural numbers. On both surfaces 4 and 5 of the substrate,
Below the strip, a world map display area is formed in which a world map corresponding to each natural number of the time display area of the strip corresponding to a geographical location is formed, and this world map has an upper part in the north, and The lower part is the south, the lateral direction is the east-west direction, the vertical direction is parallel to the earth's rotation axis, Japan is displayed in the center of the board in the horizontal direction, and almost the entire area between both ends in the horizontal direction is around the earth's rotation axis. The city name "LONDON", "PARI"
S "," JAPAN "," SYDNEY "," ANCH
OLEGE "," LOS ANGELES "," NEW "
YORK ”and“ RIO DE JANEIRO ”
Are displayed in this order from left to right.

[0018]

As described above, according to the present invention, the following effects can be achieved. (1) The strip body is placed such that A, which is one of the first logarithmic numbers displayed on the substrate, and B, which is one of the second logarithmic numbers displayed on the strip, coincide with each other. After the rotation, the second logarithmic scale number C corresponding to the first logarithmic scale number "1" can be read as a value obtained by multiplying A and B. Substituting the numerical value of the amount of Japanese yen exchanged for one unit of foreign currency into A,
By substituting the numerical value of the transaction amount of foreign currency into B and using the above-described multiplication procedure, the numerical value C of the transaction amount in Japanese yen can be obtained easily and quickly. In addition, the result of division in addition to multiplication can be obtained quickly and easily by a predetermined operation. Since the first logarithmic scale is displayed as the reciprocal of the second logarithmic scale, the first logarithmic scale displayed on the substrate only needs to draw the value of Japanese yen exchanged for one unit of foreign currency. Therefore, only the necessary parts are displayed on the first logarithmic scale. Accordingly, when the band is rotated, the display amount of the first logarithmic scale is small, so that the corresponding scale is easy to read and easy to use. Also, even when the band is pushed and displaced in the widthwise direction by hand or the like, the first logarithmic scale of the substrate below the band is easy to read.

Further, since the value displayed on the second logarithmic scale can be determined at a glance that it is a foreign currency, the possibility of erroneous operation is reduced.

(2) In the state where the natural numbers 1 to 24 of the strip correspond to the geographic points of the world map displayed in the world map area on one surface of the substrate, The time of the point and the time difference between the geographical points can be easily and quickly known.

Further, since the world map is displayed on the board, even a foreigner who cannot understand the language can easily know the time and the time difference of each point.

(3) Time display area portions M1 and M2 of the belt
By matching the natural number of a point to a point on the world map displayed in the world map display area of the board, the time at another point corresponding to an arbitrary time at one point and the time difference between the points can be easily determined. And it can be quickly recognized. In addition, since the world map is displayed, the time can be easily recognized even by a foreigner who cannot read the displayed city name.

(4) The band has two time display area portions M
1 and M2 are connected in the circumferential direction, and the natural number 24 of the time display area M1 and the natural number 1 of the time display area M2
And the interval between the natural number 24 of the time display area M2 and the natural number 1 of the time display area M1 are 1 to 2
Since a time display area selected to have a value equal to the interval of each natural number of 4 is formed, one day, that is, 24 hours of time at each point is simultaneously recorded on one surface by a stretched portion of the band. Can be displayed.

Since the world map displayed on both surfaces of the substrate is developed over 360 ° around the rotation axis of the earth, it is not necessary to turn the other surface of the substrate upside down and to view a desired point in the whole world. Can be easily known. This is important from the viewpoint of good operability during travel. In addition, the band can be moved with one hand while holding the substrate with one hand, which is advantageous during traveling.

(5) Since the slide rule / currency converter, which is also used for time conversion, is composed of a substrate and a band, the configuration is simple. In addition, the belt can be easily rotated with, for example, a thumb or forefinger, and can be accurately positioned at an arbitrary position.

(6) The first logarithmic scale is displayed over both surfaces of the circumference L of one circumference of the substrate. Since the substrate is not configured to extend further in the horizontal direction, for example, the substrate is formed in a credit card shape. Even if it is formed in the size and the shape of the band, the first logarithmic scale is displayed as large as possible, so that it can easily correspond to each numerical value of the second logarithmic scale of the band.
In this way, the slide rule / currency converter that also serves as time conversion according to the present invention can be made as small as possible, and the numerical values to be read can be clearly seen with good operability. For example, a slide rule and currency converter that converts a substrate into a credit card having a length of about 9 cm and a width of about 5.5 cm and also serves as time conversion is lightweight, small, and excellent in portability. The slide rule / currency converter thus formed, which also serves as a time converter, can be easily operated with one hand even while traveling by airplane or car or in a crowded place.

(7) Since the thickness of the substrate is selected to be sufficiently smaller than the length in the direction in which the band is rotated, each natural number from 1 to 10 is included in the second logarithmic scale displayed on the band. Can be displayed at equal intervals. Therefore, an excellent effect that the band on which the second logarithmic scale is displayed can be arbitrarily rotated and moved to obtain an accurately calculated value is achieved.

If the thickness of the substrate is a large value that cannot be ignored with respect to the length in the direction in which the band is rotated, the scale of the second logarithmic scale has unequally spaced portions. Therefore, when this portion exists on both surfaces of the substrate, it is impossible to obtain an accurately calculated value. The present invention can solve such an important problem.

(8) Since the band is a thin film, has flexibility, and is provided so as to endlessly surround the substrate, the band is provided between the band and one surface of the substrate. A small piece of paper, such as a boarding ticket, can be sandwiched, and there is no risk of losing such a piece of paper when traveling, which is convenient.

Further, since the band may be small, there is also an effect that the material of the band can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a slide rule 1 according to an embodiment of the present invention.

FIG. 2 is a rear view of slide rule 1 in FIG.

FIG. 3 is a cross-sectional view taken along line III-III in FIG.

FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is a cross-sectional view of a band 3 and a first embodiment according to an embodiment of the present invention.
It is a circumferential development view of logarithmic scale 6.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Currency converter 2 Substrate 3 Band 6 and 10 Logarithm 13 Currency character 14 Yen character 15 Foreign currency character 16, 17 Guide groove 23 World map display area 24 World map 26 First scale 33 Time display area 35 Second scale

Claims (1)

(57) [Claims] 1. A vertical short side of about 5.5 cm and a horizontal long side of about 9 c.
m, a rigid card-like substrate made of flat paper or synthetic resin having a thickness of about 1 to 2 mm, and a center portion of the short side of the substrate, the upper end of the substrate being endless near one of the long sides. A band made of a thin film made of a flexible synthetic resin and having a light-transmitting property, the substrate being rotatable around the substrate, and having a thickness in a direction in which the band is rotated. And a circumference L of one circumference above the substrate near one side in the width direction of the band.
A first logarithmic scale 6 is displayed over both surfaces 4 and 5 of the substrate. Above the first logarithmic scale 6, on one surface 4 of the substrate, from left to right, (a) one German currency The amount of currency in Japanese yen to be exchanged for the mark, one US dollar, one British sterling pound, and one French franc from 65 to 75, from 90 to 110, from 150 to 170, from 19 to about 20 Is displayed with its digits changed to values from 1 to 10, and "DM" stands for 1 German mark, 1 US dollar, 1 British sterling pound, and 1 French franc,
The characters "US $", "STG", and "FF" are displayed. (B) Transaction in Japanese yen to be read on the band at the position corresponding to the first logarithmic numeral "1". A character “￥” indicating the display position of the height is displayed. Above the first logarithm scale 6, on the left end on the other surface 5 of the substrate, the remaining portion of about 1 French franc from about 20 to 22 is displayed. ,
The digit is changed to a value from 1 to 10 and displayed, and a character "FF" representing one French franc is displayed. At the top of the band equal to the perimeter L, the entire circumference of the band is displayed. The digit of the transaction volume in foreign currency is changed to a value from 1 to 10 and the second logarithmic scale 1 is the inverse of the first logarithmic scale.
It is displayed as 0, and the band has "foreign currency" indicating that the second logarithmic scale is foreign currency
Are displayed at a plurality of locations below the second logarithm 10 at intervals in the circumferential direction so that they can be seen from both surfaces of the substrate. "3", "6",
Two time display area portions M1 and M2 in which natural numbers “9”, “12”, “15”, “18”, “21” and “24” are displayed at equal intervals in the circumferential direction.
Are continuously formed in the circumferential direction, and each time display area portion M
1, M2, the respective natural numbers are arranged and displayed so as to increase in value from left to right,
The interval between the natural number “24” of one time display area M1 and the leftmost end of the other time display area M2, and the natural number “24” of the other time display area M2 and the one time display area M1 A time display area is formed in which the distance from the left end is selected to be equal to the distance of each natural number. On both surfaces 4 and 5 of the substrate, the time display of the band is provided below the band. A world map display area is formed in which a world map is displayed in which a geographical location corresponding to each natural number of the area is displayed. This world map has an upper part of north, a lower part of south, and a horizontal direction of east-west. The direction is parallel to the earth's axis of rotation, and Japan is displayed in the center of the board in the horizontal direction, and is spread over almost the entire area between both ends in the horizontal direction, extending 360 degrees around the earth's axis of rotation. "LO DON "," PARIS "," JAPAN ",
"SYDNEY", "ANCHOREGE", "LOS
ANGELES ”,“ NEW YORK ”and“ R
"IO DE JANEIRO" is displayed almost in this order from left to right.