CN203511068U - Multifunctional ruler for students - Google Patents
Multifunctional ruler for students Download PDFInfo
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- CN203511068U CN203511068U CN201320644673.1U CN201320644673U CN203511068U CN 203511068 U CN203511068 U CN 203511068U CN 201320644673 U CN201320644673 U CN 201320644673U CN 203511068 U CN203511068 U CN 203511068U
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Abstract
The utility model relates to school supplies for students, in particular to a multifunctional ruler for students. The multifunctional ruler for students is transparent, and a linear protrusion or groove is formed on or in a ruler surface and comprises a first group of marking lines. The first group of marking lines include a plurality of radials PA which have the same endpoint, and the plurality of radials PA and the edge A of the multifunctional ruler for students form angles of 15 degrees, 30 degrees, 45 degrees, 60 degrees and 75 degrees. The multifunctional ruler for students has the advantages that students can make the following special angles of 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, 90 degrees, 105 degrees, 120 degrees, 135 degrees, 150 degrees and 165 degrees conveniently without a graphometer.
Description
Technical field
The utility model relates to a kind of student's stationery, in particular to Multifunctional ruler for pupils.
Background technology
Student, in daily study, often runs into some basic mapping problems, for example, makes some special angles: 30 °, 45 °, 60 °, 90 °, 120 °, 135 ° and 150 °.In existing technology, above-mentioned mapping problem is all by cover chi, and ruler, 45 ° of right angle triangles, 60 ° of right angle triangles and graphometer complete.
For example, with 45 ° of right angle triangles and 60 ° of right angle triangles, match and can make special angle: 30 °, 45 °, 60 °, 90 °, 120 °, 135 ° and 150 °.
The shortcoming of correlation technique is, with 45 ° of right angle triangles and 60 ° of right angle triangles, can only do 30 °, 45 °, 60 °, 90 °, 120 °, the special angle of 135 ° and 150 °, and some angle needs two set squares to coordinate, lacking one also cannot make, and for 15 °, 75 °, 105 °, 165 ° of this special angles, can only according to standard step, make with graphometer, therefore adopt existing cover chi to complete the mapping problem of above-mentioned special angle very inconvenient, not only step bothers, and need in addition by graphometer, if do not have graphometer just cannot complete mapping.
Utility model content
The purpose of this utility model is to provide Multifunctional ruler for pupils, to solve the above problems.
In embodiment of the present utility model, provide Multifunctional ruler for pupils, Multifunctional ruler for pupils is transparent, is provided with line style projection or groove on chi face, and line style projection or groove comprise: first group of graticule,
First group of graticule comprises many ray PA, and many ray PA have same end points, and many ray PA become respectively 15 °, 30 °, 45 °, 60 ° and 75 ° of angles with an edge A of Multifunctional ruler for pupils.
The Multifunctional ruler for pupils providing by the utility model, can bring following beneficial effect:
Adopt above-mentioned Multifunctional ruler for pupils not need graphometer can make easily following special angle: 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, 105 °, 120 °, 135 °, 150 ° and 165 °.
This sentences 15 ° and 105 ° is example:
Do 15 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become with the edge A of Multifunctional ruler for pupils 15 ° ray therewith straight line overlap, mobile multifunctional students use rulers, makes one end of straight line expose the edge A of Multifunctional ruler for pupils, cross one end of straight line and make a ray along edge A, complete 15 ° of angle mappings.
Do 105 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become the ray straight line coincidence therewith of 75 ° with the edge A of Multifunctional ruler for pupils, mobile multifunctional students use rulers, makes one end of straight line expose edge A, cross one end and make a ray along edge A, complete 105 ° of angle mappings.
The mapping of other special angle can be analogized.
The Multifunctional ruler for pupils of another kind of shape is also provided in embodiment of the present utility model, Multifunctional ruler for pupils is transparent, is shaped as triangle, is provided with line style projection or groove on chi face, line style projection or groove comprise: vertical line, first group of graticule and second group of graticule
Vertical line is perpendicular to an edge B crossing with edge B of leg-of-mutton Multifunctional ruler for pupils;
First group of graticule comprises many ray PC, and many ray PC have same end points, and the direction of many ray PC is all towards vertical line, and many ray PC become respectively 15 °, 30 °, 45 ° and 75 ° of angles with edge B;
Second group of graticule comprises many ray PD, and second group of graticule is corresponding axisymmetricly with first group of relative vertical line of graticule.
The Multifunctional ruler for pupils providing by the utility model, can bring following beneficial effect:
Adopt above-mentioned Multifunctional ruler for pupils not need graphometer can make easily following special angle: 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, 105 °, 120 °, 135 °, 150 ° and 165 °.
This sentences 15 ° and 105 ° is example:
Do 15 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become with an edge B of Multifunctional ruler for pupils 15 ° ray therewith straight line overlap, mobile multifunctional students use rulers, makes one end of straight line expose the edge B of Multifunctional ruler for pupils, cross one end of straight line and make a ray along edge B, complete 15 ° of angle mappings.
Do 105 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become the ray straight line coincidence therewith of 75 ° with the edge B of Multifunctional ruler for pupils, mobile multifunctional students use rulers, makes one end of straight line expose edge B, cross one end and make a ray along edge B, complete 105 ° of angle mappings.
The mapping of other special angle can be analogized.
The Multifunctional ruler for pupils of another kind of shape is also provided in embodiment of the present utility model, Multifunctional ruler for pupils is transparent, graphometer by triangle chi and quadrant arc connects and composes, triangle chi be shaped as right angled triangle and one of them acute angle is 60 °; Graphometer is connected with triangle chi by a wherein edge C at the right angle of triangle chi,
On the chi face of Multifunctional ruler for pupils, be provided with line style projection or groove, line style projection or groove comprise: the graduation mark of ray groups, vertical line, graphometer,
Ray groups and vertical line are positioned on the chi face of triangle chi;
Ray groups comprises many ray PE, and many ray PE have same end points, and many ray PE become respectively 15 °, 45 °, 75 °, 105 °, 135 ° and 165 ° of angles with an edge D of triangle chi;
Vertical line intersects perpendicular to edge D and with edge D, and vertical line is by the end points of ray PE.
The Multifunctional ruler for pupils providing by the utility model, can bring following beneficial effect:
Adopt above-mentioned Multifunctional ruler for pupils not need graphometer can make easily following special angle: 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, 105 °, 120 °, 135 °, 150 ° and 165 °.
This sentences 15 °, 30 °, 105 ° and 120 ° is example:
Do 15 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become with an edge C of triangle chi 15 ° ray therewith straight line overlap, mobile multifunctional students use rulers, makes one end of straight line expose the edge C of Multifunctional ruler for pupils, cross one end of straight line and make a ray along edge C, complete 15 ° of angle mappings.
Do 30 ° of angles, because one of them acute angle of triangle chi is 30 °, therefore 30 ° of angles can be made very easily.
Do 105 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become the ray straight line coincidence therewith of 75 ° with the edge C of Multifunctional ruler for pupils, mobile multifunctional students use rulers, makes one end of straight line expose edge C, cross one end and make a ray along edge C, complete 105 ° of angle mappings.
Make hexagonal angle, can utilize the graphometer of the quadrant arc of Multifunctional ruler for pupils to complete mapping.
The mapping of other special angle can be analogized.
For above-mentioned basic mapping problem, the Multifunctional ruler for pupils that adopts the utility model to provide, can complete very easily mapping, and not need in addition by graphometer.
Accompanying drawing explanation
The schematic diagram of the Multifunctional ruler for pupils that Fig. 1 provides for the utility model embodiment mono-;
The schematic diagram of the Multifunctional ruler for pupils that Fig. 2 provides for the utility model embodiment bis-;
The schematic diagram of the Multifunctional ruler for pupils that Fig. 3 provides for the utility model embodiment tri-.
The specific embodiment
Below by specific embodiment, also by reference to the accompanying drawings the utility model is described in further detail.
The schematic diagram of the Multifunctional ruler for pupils that Fig. 1 provides for the utility model embodiment mono-, as shown in Figure 1, this Multifunctional ruler for pupils is transparent, is provided with line style projection or groove on chi face 400, line style projection or groove comprise first group of graticule 200,
First group of graticule 200 comprises many ray PA210, and many ray PA210 have same end points 211, and many ray PA210 become respectively 15 °, 30 °, 45 °, 60 ° and 75 ° of angles with an edge A410 of Multifunctional ruler for pupils.
Adopt above-mentioned Multifunctional ruler for pupils not need graphometer can make easily following special angle: 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, 105 °, 120 °, 135 °, 150 ° and 165 °.
This sentences 15 ° and 105 ° is example:
Do 15 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become with the edge A of Multifunctional ruler for pupils 15 ° ray therewith straight line overlap, mobile multifunctional students use rulers, makes one end of straight line expose the edge A of Multifunctional ruler for pupils, cross one end of straight line and make a ray along edge A, complete 15 ° of angle mappings.
Do 105 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become the ray straight line coincidence therewith of 75 ° with the edge A of Multifunctional ruler for pupils, mobile multifunctional students use rulers, makes one end of straight line expose edge A, cross one end and make a ray along edge A, complete 105 ° of angle mappings.
The mapping of other special angle can be analogized.
Preferably, line style projection or groove also comprise: vertical line 100 and second group of graticule 300,
Vertical line 100 is perpendicular to edge A410, and vertical line 100 intersects with edge A410;
The direction of many ray PA210 of first group of graticule 200 is all towards vertical line 100;
Second group of graticule 300 comprises many ray PB, and second group of graticule is corresponding axisymmetricly with first group of relative vertical line of graticule.
Vertical line and second group of graticule are further set on Multifunctional ruler for pupils and can also complete easily some other basic construction method problem, make isosceles triangle as 1.; 2. make the angular bisector of random angle.
1. make isosceles triangle.
First do a base of isosceles triangle and mark its mid point, the vertical line of Multifunctional ruler for pupils 100 is overlapped with base, mobile multifunctional students use rulers, make the mid point through base perpendicular to the edge A410 of vertical line 100, the straight line at edge A410 place is the perpendicular bisector on base, appoint thereon and get any and make marks and connect respectively base end points, obtain isosceles triangle.
2. make the angular bisector of random angle.
Only need first on the both sides at angle, to get respectively 2 points, these 2 distances to the summit at angle are equated, then make the vertical line 100 of Multifunctional ruler for pupils through the summit at angle, mobile multifunctional students use rulers, make edge A410 perpendicular to vertical line 100 through 2 points, connect Vertex and vertical line 100 are the angular bisector at angle with the ray of the intersection point of edge A410.
Preferably, line style projection or groove also comprise a number axis 10, and number axis 10 is arranged at a long limit of this Multifunctional ruler for pupils.
Preferably, this Multifunctional ruler for pupils can be ruler.Certainly, the shape of Multifunctional ruler for pupils can be chosen arbitrarily, and for example, as other optional embodiment, Multifunctional ruler for pupils also can be designed to isosceles right triangle or an angle is right angled triangle of 60 ° etc.
Preferably, be shaped as the Multifunctional ruler for pupils of ruler, its length can be chosen for 16-20cm, and the Multifunctional ruler for pupils that length is 16-20cm had both facilitated student to carry, and its length can meet again student's use needs.Certainly, the length of Multifunctional ruler for pupils is the concrete condition when using to choose arbitrarily.
Preferably, the two ends of Multifunctional ruler for pupils as shown in Figure 1, can be respectively equipped with the graphometer of two quadrant arcs, and the scale of one of them graphometer 500 is 0 °-90 °; The scale of another graphometer 510 is 90 °-180 °.Further, on graphometer 500 and graphometer 510, be also provided with radius ascending 4 semi arch graticules successively, on graphometer 500 and graphometer 510 since 0 ° every 10 ° of scale graticules that are all provided with whole ten degree, scale graticule of these whole ten degree can be arranged on graphometer face between the first Zhi tri-road semi arch graticules from inside to outside; On graphometer 500 and graphometer 510, be also provided with the scale graticule (the scale graticule that is accurate to 1 ° is not shown in Figure of description) that is accurate to 1 °, this scale graticule that is accurate to 1 ° can be arranged on graphometer face from inside to outside tetra-road semi arch graticules to graphometer edge.
Preferably, vertical line 100 is vertically divided the edge A410 of ruler equally, and vertical line 100 is the mid point of edge A410 with the intersection point of edge A410, the long limit that edge A410 is ruler.
Preferably, on a long edge of ruler, can arrange and indicate digital length scale, another slightly short long edge relative with the long edge that is provided with length scale can arrange the number axis that indicates initial point and numeral, length scale and number axis are set can facilitate student to carry out linear measure longimetry and draw number axis with Multifunctional ruler for pupils, further, can also on the basis of number axis, draw plane right-angle coordinate, only the number axis that indicates initial point need be overlapped with vertical line 100, order is provided with the long edge of number axis by initial point, can draw the longitudinal axis of plane right-angle coordinate.
This Multifunctional ruler for pupils can adopt any transparent material to make, and preferably, Multifunctional ruler for pupils can be transparent plastic multifunctional students use rulers.Adopting plastics to make Multifunctional ruler for pupils can be cost-saving, alleviates the weight of Multifunctional ruler for pupils.
As an optional embodiment, the length of Multifunctional ruler for pupils can be taken as 16cm, widely can be taken as 4cm, and long and wide ratio is suitable; One side of Multifunctional ruler for pupils is to indicate the ruler limit that numeral and the length of scale are 15cm, and scale is accurate to millimeter, and the width of scale can be set to 5.5mm, is convenient to student and uses this Multifunctional ruler for pupils; The two ends, left and right of Multifunctional ruler for pupils are respectively provided with the graphometer of two quadrant arcs, and the scale of one of them graphometer is 0 °-90 °; The scale of another graphometer is 90 °-180 °, the radius of graphometer is 3cm, in graphometer, be also provided with four quadrant arc label lines, the radius of circular arc graticule can be chosen for respectively 10mm, 17mm, 20mm and 26mm, graphometer can be provided with 0 °-180 ° whole ten degree graduation marks to be run through wherein, and the minimum scale of graphometer can be as accurate as 1 °; At the long edge with being provided with length scale, another relative slightly short long edge can arrange the number axis that indicates initial point and numeral; The vertical line of Multifunctional ruler for pupils is arranged at the 7.5cm scale place of ruler, run through whole Multifunctional ruler for pupils and divide chi face equally, vertical line and the long edge that is provided with number axis intersect at the initial point of number axis, thereby can improve the accuracy at the vertical or right angle of picture, also can draw more easily plane right-angle coordinate; First group of graticule and second group of graticule are arranged at the middle part of the chi face of Multifunctional ruler for pupils, and vertical line is symmetric relatively; Preferably, the line style projection arranging on the chi face of Multifunctional ruler for pupils or groove also comprise one or more horizontal line vertical with vertical line, for example, and apart from number axis
place arranges a horizontal line, and horizontal line and vertical line intersect, and by this horizontal line, can conveniently draw the equilateral triangle of length of side 4cm.Concrete steps are: first do 4cm line segment, mark its mid point, make horizontal line overlap with line segment; Vertical line is by the mid point of line segment, and the initial point of number axis is the summit of the equilateral triangle of length of side 4cm, and connect Vertex and base two-end-point obtain the equilateral triangle of length of side 4cm respectively.Similarly, many horizontal lines vertical with vertical line in addition also can be set on the chi face of Multifunctional ruler for pupils, and then can realize the convenient equilateral triangle of drawing the different length of sides.In addition, because the radius of the graphometer of this Multifunctional ruler for pupils is 3cm, so can conveniently draw the equilateral triangle that the length of side is 3cm.Concrete steps are: first do 3cm line segment, make 0 ° of angular radius of graphometer overlap with line segment; The radius at 60 ° of angles of graphometer and the intersection point at graphometer edge are the summit of equilateral triangle.Further, this Multifunctional ruler for pupils can also conveniently be drawn isosceles trapezoid, concrete steps are: take respectively the 7.5cm scale place of number axis initial point and ruler makes two not isometric line segments symmetrically as mid point, connects respectively the opposite ends of two line segments, is an isosceles trapezoid.
The Multifunctional ruler for pupils of another kind of shape is also provided in embodiment of the present utility model, as shown in Figure 2, Multifunctional ruler for pupils is transparent, be shaped as triangle, on chi face 600, be provided with line style projection or groove, line style projection or groove comprise vertical line 610, first group of graticule 620 and second group of graticule 630
First group of graticule 620 comprises many ray PC640, and many ray PC640 have same end points, and the direction of many ray PC640 is all towards vertical line 610, and many ray PC640 become respectively 15 °, 30 °, 45 ° and 75 ° of angles with edge B680;
Second group of graticule 630 comprises many ray PD, and second group of graticule 630 is corresponding axisymmetricly with first group of relative vertical line 610 of graticule 620;
Adopt above-mentioned Multifunctional ruler for pupils not need graphometer can make easily following special angle: 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, 105 °, 120 °, 135 °, 150 ° and 165 °.
This sentences 15 ° and 105 ° is example:
Do 15 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become with an edge B of Multifunctional ruler for pupils 15 ° ray therewith straight line overlap, mobile multifunctional students use rulers, makes one end of straight line expose the edge B of Multifunctional ruler for pupils, cross one end of straight line and make a ray along edge B, complete 15 ° of angle mappings.
Do 105 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become the ray straight line coincidence therewith of 75 ° with the edge B of Multifunctional ruler for pupils, mobile multifunctional students use rulers, makes one end of straight line expose edge B, cross one end and make a ray along edge B, complete 105 ° of angle mappings.
The mapping of other special angle can be analogized.
Preferably, the line style projection of triangle multifunction students use rulers or groove can also comprise the graphometer line 650 of quadrant arc.
Preferably, in 5 semi arch graticules of graphometer line 650, the radius of the 3rd semi arch can be elected 3cm as, and the radius of the 4th semi arch can be elected 4cm as, and is hollow out between the 3rd semi arch and the 4th semi arch.Adopting the triangle multifunction students use rulers of above-mentioned preferred arrangement can also be easy to make the length of side is 3cm, the equilateral triangle of 4cm.For example, it as the length of side, is the equilateral triangle of 3cm, only need first draw a 3cm line segment, make this line segment as a radius of the 3rd semi arch, by graphometer, can be obtained easily the 3rd summit of equilateral triangle, again because be hollow out between the 3rd semi arch and the 4th semi arch, so can directly mark this summit on paper, two end points of last connect Vertex and 3cm line segment, obtaining the length of side is the equilateral triangle of 3cm, the equilateral triangle method of making 4cm is similar, therefore do not repeat.
Preferably, triangle multifunction students use rulers near being also provided with on the chi face on a limit, to indicate digital length be 15cm scale mark; On the close chi face on another limit of triangle multifunction students use rulers, be also provided with the number axis 10 that indicates initial point and numeral; Further, at initial point place, be also provided with the vertical line 670 perpendicular to number axis.
Beneficial effect and preferred arrangement in its beneficial effect of leg-of-mutton Multifunctional ruler for pupils and part preferred arrangement and previous embodiment one are similar, for example, adopt leg-of-mutton Multifunctional ruler for pupils also can complete easily isosceles triangle, the length of side is the equilateral triangle of 3cm or 4cm and these several mappings of angular bisector of random angle etc., so locate to repeat no more.
The Multifunctional ruler for pupils of another kind of shape is also provided in embodiment tri-of the present utility model, as shown in Figure 3, Multifunctional ruler for pupils is transparent, graphometer by triangle chi and quadrant arc connects and composes, triangle chi be shaped as right angled triangle and one of them acute angle is 60 °; Graphometer is connected with triangle chi by a wherein edge C 720 at the right angle of triangle chi,
On the chi face of Multifunctional ruler for pupils, be provided with line style projection or groove, line style projection or groove comprise: the graduation mark 750 of ray groups 700, vertical line 730, graphometer,
Adopt above-mentioned Multifunctional ruler for pupils not need graphometer can make easily following special angle: 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, 105 °, 120 °, 135 °, 150 ° and 165 °.
This sentences 15 °, 30 °, 105 ° and 120 ° is example:
Do 15 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become with an edge C of triangle chi 15 ° ray therewith straight line overlap, mobile multifunctional students use rulers, makes one end of straight line expose the edge C of Multifunctional ruler for pupils, cross one end of straight line and make a ray along edge C, complete 15 ° of angle mappings.
Do 30 ° of angles, because one of them acute angle of triangle chi is 30 °, therefore 30 ° of angles can be made very easily.
Do 105 ° of angles, first do straight line, Multifunctional ruler for pupils is covered on this straight line, because Multifunctional ruler for pupils is transparent, so can make to become the ray straight line coincidence therewith of 75 ° with the edge C of Multifunctional ruler for pupils, mobile multifunctional students use rulers, makes one end of straight line expose edge C, cross one end and make a ray along edge C, complete 105 ° of angle mappings.
Make hexagonal angle, can utilize the graphometer of the quadrant arc of Multifunctional ruler for pupils to complete mapping.
The mapping of other special angle can be analogized.
The Multifunctional ruler for pupils providing in embodiment tri-of the present utility model, beneficial effect and preferred arrangement in its beneficial effect and part preferred arrangement and previous embodiment one are similar, for example, adopt the Multifunctional ruler for pupils providing in embodiment tri-also can complete easily these two kinds mappings of angular bisector of isosceles triangle and random angle etc., so locate to repeat no more.
In other optional embodiment, line style projection or groove set on the chi face of above-mentioned Multifunctional ruler for pupils provided by the utility model also can replace with graticule or other linear mark.For example, the form of described graticule scale graticule of printed black on can similar existing all kinds of chis.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. Multifunctional ruler for pupils, is characterized in that, Multifunctional ruler for pupils is transparent, is provided with line style projection or groove on chi face, and described line style projection or groove comprise: first group of graticule,
Described first group of graticule comprises many ray PA, and many described ray PA have same end points, and many described ray PA become respectively 15 °, 30 °, 45 °, 60 ° and 75 ° of angles with an edge A of described Multifunctional ruler for pupils.
2. Multifunctional ruler for pupils according to claim 1, is characterized in that, described line style projection or groove also comprise: vertical line and second group of graticule,
Described vertical line is perpendicular to described edge A, and described vertical line and described edge A intersect;
The direction of many described ray PA of described first group of graticule is all towards described vertical line;
Described second group of graticule comprises many ray PB, and described second group of graticule is corresponding axisymmetricly with the relative described vertical line of described first group of graticule.
3. Multifunctional ruler for pupils according to claim 2, is characterized in that, described Multifunctional ruler for pupils is ruler.
4. Multifunctional ruler for pupils according to claim 3, is characterized in that, the two ends of described Multifunctional ruler for pupils are respectively equipped with the graphometer of two quadrant arcs,
On described graphometer, be also provided with radius ascending 4 semi arch graticules successively;
On described graphometer, since 0 °, be provided with scale graticule every 10 °, on described graphometer, be also provided with the scale graticule that is accurate to 1 °.
5. Multifunctional ruler for pupils according to claim 3, is characterized in that, the long limit that described edge A is described ruler; The intersection point of described vertical line and described edge A is the mid point of described edge A.
6. Multifunctional ruler for pupils according to claim 5, is characterized in that, the described line style projection arranging on the chi face of described ruler or groove also comprise one or more horizontal line vertical with described vertical line.
7. Multifunctional ruler for pupils according to claim 1, is characterized in that, described line style projection or groove also comprise a number axis, and described number axis is arranged at a long limit of described Multifunctional ruler for pupils.
8. Multifunctional ruler for pupils according to claim 1, is characterized in that, described Multifunctional ruler for pupils is plastic multifunctional students use rulers.
9. Multifunctional ruler for pupils, is characterized in that, Multifunctional ruler for pupils is transparent, is shaped as triangle, is provided with line style projection or groove on chi face, and described line style projection or groove comprise: vertical line, first group of graticule and second group of graticule,
Described vertical line is perpendicular to an edge B crossing with described edge B of described leg-of-mutton Multifunctional ruler for pupils;
Described first group of graticule comprises many ray PC, and many described ray PC have same end points, and the direction of many described ray PC is all towards described vertical line, and many described ray PC become respectively 15 °, 30 °, 45 ° and 75 ° of angles with described edge B;
Described second group of graticule comprises many ray PD, and described second group of graticule is corresponding axisymmetricly with the relative described vertical line of described first group of graticule.
10. Multifunctional ruler for pupils, is characterized in that, Multifunctional ruler for pupils is transparent, by the graphometer of triangle chi and quadrant arc, connected and composed, described triangle chi be shaped as right angled triangle and one of them acute angle is 60 °; Described graphometer is connected with described triangle chi by a wherein edge C at the right angle of described triangle chi,
On the chi face of described Multifunctional ruler for pupils, be provided with line style projection or groove, described line style projection or groove comprise: the graduation mark of ray groups, vertical line, described graphometer,
Described ray groups and described vertical line are positioned on the chi face of described triangle chi;
Described ray groups comprises many ray PE, and many described ray PE have same end points, and many described ray PE become respectively 15 °, 45 °, 75 °, 105 °, 135 ° and 165 ° of angles with an edge D of described triangle chi;
Described vertical line intersects perpendicular to described edge D and with described edge D, and described vertical line is by the end points of described ray PE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320644673.1U CN203511068U (en) | 2013-10-18 | 2013-10-18 | Multifunctional ruler for students |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320644673.1U CN203511068U (en) | 2013-10-18 | 2013-10-18 | Multifunctional ruler for students |
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| CN203511068U true CN203511068U (en) | 2014-04-02 |
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|---|---|---|---|
| CN201320644673.1U Expired - Fee Related CN203511068U (en) | 2013-10-18 | 2013-10-18 | Multifunctional ruler for students |
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| CN (1) | CN203511068U (en) |
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2013
- 2013-10-18 CN CN201320644673.1U patent/CN203511068U/en not_active Expired - Fee Related
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