CN203371961U - Multifunctional teaching ruler - Google Patents
Multifunctional teaching ruler Download PDFInfo
- Publication number
- CN203371961U CN203371961U CN201320468967.3U CN201320468967U CN203371961U CN 203371961 U CN203371961 U CN 203371961U CN 201320468967 U CN201320468967 U CN 201320468967U CN 203371961 U CN203371961 U CN 203371961U
- Authority
- CN
- China
- Prior art keywords
- ruler
- circle
- semicircular protractor
- straightedge
- circular hole
- 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 - Fee Related
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a multifunctional teaching ruler. The multifunctional teaching ruler comprises a multifunctional ruler body comprising a straightedge, wherein the straightedge is provided with a semicircular protractor provided with a gravity needle, the joint point of the rotary axis of the gravity needle and the semicircular protractor is provided with a first round hole, the multifunctional ruler body is provided with a second round hole, the straightedge is provided with a hollow circle, a hollow triangle, a hollow pentagon, a hollow oval and a hollow rectangle, and the straightedge is further provided with a longitude and latitude coordinate system. According to the multifunctional teaching ruler, when straight lines with different gradients are drawn on a blackboard, the gravity needle always points downwards under the action of gravity, and the angle of the gravity needle reflected in the semicircular protractor can reflect the inclined angle of the drawing edge of the straightedge. Circles with different radiuses can be drawn through the first round hole and the second round hole, a circle, a triangle, a pentagon, an oval and a rectangle can be rapidly drawn, and the longitude and latitude coordinate system can be used for judging a longitude-latitude grid and related positions of two points.
Description
Technical field
The utility model relates to a kind of teaching aid, relates to specifically the functional ruler that a kind of blackboard drawing is used.
Background technology
At present the functional ruler of mapping use on blackboard, be subject to the impact of its structure can accurately not draw the parallax of horizontal line, plumb line and various angles, teacher is charted on blackboard in entirely by rule of thumb, more difficult.
The utility model content
Problem to be solved in the utility model is for above problem, and a kind of multifunctional teaching ruler of the various straight lines of painting quickly and accurately is provided.
For addressing the above problem, the technical scheme that the utility model adopts is: multifunctional teaching ruler, comprise the functional ruler body, described functional ruler body comprises ruler, described ruler is provided with semicircular protractor, the straight line of described semicircular protractor is parallel with the straight line of described ruler, be rotatably installed with the gravity pin on described semicircular protractor, the calibration center superposition of the rotation of described gravity pin and described semicircular protractor, the rotation of described gravity pin is provided with the interface point of the straight line of described semicircular protractor the first circular hole matched with the chalk diameter, the center of circle of described the first circular hole overlaps with described interface point, described functional ruler body is provided with some the second circular holes that match with the chalk diameter, the center of circle of the center of circle of described the second circular hole and described the first circular hole is located along the same line, described ruler is provided with the circle of hollow out, triangle, pentagon, ellipse and rectangle, also be provided with the longitude and latitude coordinate system on described ruler.
The utility model is taked above technical scheme, have the following advantages: multifunctional teaching ruler, comprise the functional ruler body, described functional ruler body comprises ruler, described ruler is provided with semicircular protractor, the straight line of described semicircular protractor is parallel with the straight line of described ruler, be rotatably installed with the gravity pin on described semicircular protractor, the calibration center superposition of the rotation of described gravity pin and described semicircular protractor, the rotation of described gravity pin is provided with the interface point of the straight line of described semicircular protractor the first circular hole matched with the chalk diameter, the center of circle of described the first circular hole overlaps with described interface point, described functional ruler body is provided with some the second circular holes that match with the chalk diameter, the center of circle of the center of circle of described the second circular hole and described the first circular hole is located along the same line, described ruler is provided with the circle of hollow out, triangle, pentagon, ellipse and rectangle, also be provided with the longitude and latitude coordinate system on described ruler, when the utility model is drawn the straight line of different gradients on blackboard, described gravity pin is downward all the time under the effect of gravitation, the angle that it reflects in semicircular protractor can reflect the angle of inclination on ruler setting-out limit, the utility model can also be drawn by the first circular hole and the second circular hole the circle of different radii, can draw fast circle, triangle, pentagon, ellipse and rectangle, the longitude and latitude coordinate system can be for the judgement of graticules and the judgement of 2 mutual alignments, easy to use.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The accompanying drawing explanation
The structural representation that accompanying drawing is the utility model embodiment.
In figure: 1-functional ruler body; The 2-ruler; The 21-circle; The 22-triangle; The 23-pentagon; The 24-ellipse; The 25-rectangle; 26-longitude and latitude coordinate system; The 3-semicircular protractor; 4-gravity pin; 5-the first circular hole; 6-the second circular hole.
The specific embodiment
Embodiment: multifunctional teaching ruler, comprise functional ruler body 1, described functional ruler body 1 comprises ruler 2, described ruler 2 is provided with semicircular protractor 3, the straight line of described semicircular protractor 3 is parallel with the straight line of described ruler 2, be rotatably installed with gravity pin 4 on described semicircular protractor 3, the calibration center superposition of the rotation of described gravity pin 4 and described semicircular protractor 3, the rotation of described gravity pin 4 is provided with the interface point of the straight line of described semicircular protractor 3 the first circular hole 5 matched with the chalk diameter, the center of circle of described the first circular hole 5 overlaps with described interface point, described functional ruler body 1 is provided with some the second circular holes 6 that match with the chalk diameter, the center of circle of the center of circle of described the second circular hole 6 and described the first circular hole 5 is located along the same line, described ruler 2 is provided with the circle 21 of hollow out, triangle 22, pentagon 23, ellipse 24 and rectangle 25, also be provided with longitude and latitude coordinate system 26 on described ruler 2, when the utility model is drawn the straight line of different gradients on blackboard, described gravity pin 4 is downward all the time under the effect of gravitation, the angle that it reflects in semicircular protractor 3 can reflect the angle of inclination on ruler setting-out limit, the utility model can also be drawn by the first circular hole 5 and the second circular hole 6 circle of different radii, can be fast circular 21, triangle 22, pentagon 23, oval 24 and rectangle 25, longitude and latitude coordinate system 26 can be for the judgement of graticules and the judgement of 2 mutual alignments, easy to use.
Claims (1)
1. multifunctional teaching ruler, comprise the functional ruler body, described functional ruler body comprises ruler, described ruler is provided with semicircular protractor, the straight line of described semicircular protractor is parallel with the straight line of described ruler, be rotatably installed with the gravity pin on described semicircular protractor, the calibration center superposition of the rotation of described gravity pin and described semicircular protractor, it is characterized in that: the rotation of described gravity pin is provided with the interface point of the straight line of described semicircular protractor the first circular hole matched with the chalk diameter, the center of circle of described the first circular hole overlaps with described interface point, described functional ruler body is provided with some the second circular holes that match with the chalk diameter, the center of circle of the center of circle of described the second circular hole and described the first circular hole is located along the same line, described ruler is provided with the circle of hollow out, triangle, pentagon, ellipse and rectangle, also be provided with the longitude and latitude coordinate system on described ruler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468967.3U CN203371961U (en) | 2013-07-26 | 2013-07-26 | Multifunctional teaching ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468967.3U CN203371961U (en) | 2013-07-26 | 2013-07-26 | Multifunctional teaching ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203371961U true CN203371961U (en) | 2014-01-01 |
Family
ID=49834513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320468967.3U Expired - Fee Related CN203371961U (en) | 2013-07-26 | 2013-07-26 | Multifunctional teaching ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203371961U (en) |
-
2013
- 2013-07-26 CN CN201320468967.3U patent/CN203371961U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202896066U (en) | Multifunctional compasses for mathematical education | |
| CN203371961U (en) | Multifunctional teaching ruler | |
| CN203995340U (en) | Set square with calipers angle measurement device | |
| CN202557082U (en) | Novel teaching ruler | |
| CN203371962U (en) | Multipurpose ruler for geographical teaching | |
| CN204382967U (en) | Sucker type compass | |
| CN202557103U (en) | Multifunction circle-drawing instrument | |
| CN202448589U (en) | Multifunctional ruler | |
| CN204936610U (en) | A kind of fixed track multipurpose educational demonstration ruler | |
| CN202557101U (en) | Multifunctional ruler for drawing on blackboard | |
| CN202557102U (en) | Teaching ruler | |
| CN203110681U (en) | Ruler for elementary school mathematics teaching | |
| CN204196523U (en) | Mathematic teaching rule | |
| CN204845272U (en) | Demonstration of triangle -shaped cosine law and graphics primitive | |
| CN203110706U (en) | Multifunctional mathematical teaching ruler | |
| CN202345170U (en) | Protractor compasses | |
| CN201955961U (en) | Multifunctional parallelogram measuring instrument | |
| CN201646139U (en) | Compass with graduated scale | |
| CN203511075U (en) | Sucker type compasses | |
| CN202753656U (en) | Compass for teaching | |
| CN202608358U (en) | Folding ruler for teaching | |
| CN205326592U (en) | Take magnetic teaching ruler | |
| CN202156193U (en) | Bevel protractor | |
| CN202846558U (en) | Compass scissors | |
| CN202517941U (en) | Flat plate type scale compasses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20140726 |
|
| EXPY | Termination of patent right or utility model |