CN2440197Y - Functional ruler - Google Patents
Functional ruler Download PDFInfo
- Publication number
- CN2440197Y CN2440197Y CN 99224261 CN99224261U CN2440197Y CN 2440197 Y CN2440197 Y CN 2440197Y CN 99224261 CN99224261 CN 99224261 CN 99224261 U CN99224261 U CN 99224261U CN 2440197 Y CN2440197 Y CN 2440197Y
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- CN
- China
- Prior art keywords
- scale
- chi
- length
- reading
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a functional ruler with scale and scale number, which is characterized in that the length of the scale unit corresponding to each reading is corresponding to * times of 1 centermeter, and the scale unit corresponding to every reading is divided into ten minimum scale units. The length of each minimum scale unit is equivalent to * times of 1 millimeter. The utility model has the characteristic that the ruler is provided with the scale unit with illegal length which presents the * times relation with the scale unit with the legal length and the corresponding scale number. When the diameter of a circle is measured, the side length of the largest square in the circle can be directly read without calculation; the use is very convenient, and the work efficiency is also enhanced.
Description
The utility model relates to a kind of measurer of gauge length, especially for the chi of direct reading band scale.
In the round log process, in the cross section of round log, obtain the lumps of wood of maximal side, normally measure the diameter of round log, and then obtain the length of side of largest square as calculated with chi with legal metering scale.Existing chi all can not draw the length of side of largest square in the circle as calculated and directly when measuring diameter.
The purpose of this utility model is to provide a kind of can directly read the function chi that can obtain the largest square length of side in the circle when measuring diameter of a circle.
The purpose of this utility model is achieved in that the function chi with scale and number of division, its special character is that the function chi is a trisquare, and the length of the set scale unit corresponding with each reading is equivalent to 1 centimetre on the chi face of trisquare one chi arm
Doubly, the scale unit corresponding with each reading is divided into 10 minimum scale units again, and the length of each minimum scale unit is equivalent to 1 millimeter
Doubly.
Also can be provided with the scale of legal length metering unit and corresponding with it number of division on the chi face of described function chi.
The length that also can be provided with the scale unit corresponding with each reading on the chi face of described function chi is equivalent to
Centimetre, the scale unit corresponding with each reading is divided into 2 minimum scale units again, and the length of each minimum scale unit is equivalent to
Centimetre.
If described function chi is located at the measurement unit difference on chi arm two sides, then Yi Mian some scale is provided with mark on its back side correspondence position.
Described function chi, legal length metering unit scale that can also to be provided with one section end with trisquare chi arm be starting point and corresponding number of division, available like this trisquare is measured groove depth, has increased the usable range of this chi.
The illegal measured length measurement unit that the utility model provides, the number of division that is read when measuring diameter of a circle is the legal long measure reading of the required largest square length of side, its principle is that the length of diameter of a circle is the cornerwise length of largest square in this circle, and the ratio that can derive the square diagonal line and the length of side according to the Pythagorean theorem formula is
, so the physical length of the scale unit of the illegal measured length of the utility model is set to the scale unit of method measured length
Doubly, scale unit's reading of its measured illegal measured length of diameter of a circle is pairing like this is exactly scale unit's reading of the method measured length of the largest square length of side.
The utility model also provides another kind of illegal measured length measurement unit, and by the setting of this gauge length unit, the number of division that is read when measuring diameter of a circle is the legal long measure of this circumference and shows disrespect on number.Its principle is a diameter of a circle and the ratio of girth is 1: π, according to this relation, the physical length of the scale unit of the illegal measured length of the utility model is set to the scale unit of method measured length
This just means that the Ji of scale unit's reading of each illegal measured length doubly is scale unit's reading of method measured length, and scale unit's reading correspondence of illegal measured length is scale unit's reading of the method measured length of circumference when that is to say the measurement diameter.
Characteristics of the present utility model are:
1, chi is provided with the scale unit of method measured length
The illegal measured length of relation doubly: scale unit and corresponding number of division, when measuring diameter of a circle, can not read the length of side length of largest square in the circle as calculated and directly, it is convenient especially to use, and has also improved work efficiency.
2, this chi also has the scale unit of method measured length and corresponding number of division and can be by measuring scale unit and the corresponding number of division that diameter directly read the illegal measured length of circumferential length, and a chi is used more.
3, be marked with mark at the back side of some important scales commonly used, can learn the reading of measured length by mark during use at the different measurement unit scales at its back side.
Claims (5)
1, a kind of function chi with scale and number of division is characterized in that the function chi is a trisquare, and the length of the set scale unit corresponding with each reading is equivalent to 1 centimetre on the chi face of trisquare one chi arm
Doubly, the scale unit corresponding with each reading is divided into 10 minimum scale units again, and the length of each minimum scale unit is equivalent to 1 millimeter
Doubly.
2, function chi according to claim 1 is characterized in that also can being provided with on the chi face of described function chi the scale of legal length metering unit and corresponding with it number of division.
3, function chi according to claim 1 is characterized in that the length that also can be provided with the scale unit corresponding with each reading on the described chi face is equivalent to
Centimetre, the scale unit corresponding with each reading is divided into 2 minimum scale units again, and the length of each minimum scale unit is equivalent to
Centimetre.
4, according to claim 2 or 3 described function chis, be located at the measurement unit difference on chi arm two sides if it is characterized in that described function chi, then Yi Mian some scale is provided with mark on its back side correspondence position.
5, function chi according to claim 2 is characterized in that described function chi, legal length metering unit scale that can also to be provided with one section end with trisquare chi arm be starting point and corresponding number of division.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224261 CN2440197Y (en) | 1999-06-23 | 1999-06-23 | Functional ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224261 CN2440197Y (en) | 1999-06-23 | 1999-06-23 | Functional ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2440197Y true CN2440197Y (en) | 2001-07-25 |
Family
ID=34014349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99224261 Expired - Lifetime CN2440197Y (en) | 1999-06-23 | 1999-06-23 | Functional ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2440197Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782291A (en) * | 2017-10-24 | 2018-03-09 | 山东省建筑科学研究院 | A kind of novel detection ruler for plumb line for construction engineering |
| GR1009413B (en) * | 2014-11-27 | 2018-12-14 | Ιωαννης Ανδρεα Γεωργακακης | Mechanical-geometrical construction resolving the circle-squaring problem |
-
1999
- 1999-06-23 CN CN 99224261 patent/CN2440197Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR1009413B (en) * | 2014-11-27 | 2018-12-14 | Ιωαννης Ανδρεα Γεωργακακης | Mechanical-geometrical construction resolving the circle-squaring problem |
| CN107782291A (en) * | 2017-10-24 | 2018-03-09 | 山东省建筑科学研究院 | A kind of novel detection ruler for plumb line for construction engineering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |