CN202557102U - Teaching ruler - Google Patents
Teaching ruler Download PDFInfo
- Publication number
- CN202557102U CN202557102U CN2012201743898U CN201220174389U CN202557102U CN 202557102 U CN202557102 U CN 202557102U CN 2012201743898 U CN2012201743898 U CN 2012201743898U CN 201220174389 U CN201220174389 U CN 201220174389U CN 202557102 U CN202557102 U CN 202557102U
- Authority
- CN
- China
- Prior art keywords
- ruler
- semicircular protractor
- teaching
- straight
- blackboard
- 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
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a teaching ruler. The teaching ruler comprises a functional ruler body, the functional ruler body comprises a straight ruler which is provided with a semicircular protractor, a straight line edge of the semicircular protractor is in parallel with straight line edges of the straight ruler, a gravity needle is rotatably installed on the semicircular protractor, the rotation axis of the gravity needle and the scale mark center of the semicircular protractor coincide, and the functional ruler body is provided with a sucker. When the teaching ruler is used to draw straight lines at different gradients on a blackboard, the gravity needle is downwards all the time under the action of gravity, the angle displayed by the gravity needle on the semicircular protractor can reflect the gradient of a line-drawing edge of the straight ruler, and the sucker enables the teaching ruler to be fixed on the blackboard. When drawing lines on the blackboard, a user does not need to press the teaching ruler with effort, and therefore the teaching ruler is simple and convenient to use.
Description
Technical field
The utility model relates to a kind of teaching aid, relates to a kind of function chi of blackboard mapping usefulness specifically.
Background technology
At present the function chi of mapping usefulness on blackboard receives its effect on 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, difficulty relatively.
The utility model content
The problem that the utility model will solve is to above problem, and a kind of teaching gauge of the various straight lines of painting quickly and accurately is provided.
For addressing the above problem, the technical scheme that the utility model adopted is: teaching gauge comprises function chi body; Said function chi body comprises ruler; Said ruler is provided with semicircular protractor, and the straight line of said semicircular protractor is parallel with the straight line of said ruler, is rotatably installed with the gravity pin on the said semicircular protractor; The rotation of said gravity pin overlaps with the calibration center of said semicircular protractor, and said function chi body is provided with sucker.
The utility model is taked above technical scheme, has the following advantages: teaching gauge comprises function chi body; Said function chi body comprises ruler; Said ruler is provided with semicircular protractor, and the straight line of said semicircular protractor is parallel with the straight line of said ruler, is rotatably installed with the gravity pin on the said semicircular protractor; The rotation of said gravity pin overlaps with the calibration center of said semicircular protractor, and said function chi body is provided with sucker; When the utility model is drawn the straight line of different gradients on blackboard; Said gravity pin is downward all the time under the effect of gravitation; The angle that it is reflected in semicircular protractor can reflect the angle of inclination on ruler setting-out limit; Being provided with of sucker can let the utility model be fixed on the blackboard, and that on blackboard, need not require great effort in the setting-out pins with hand, easy to use.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Accompanying drawing is the structural representation of the utility model embodiment.
Among the figure: 1-function chi body; The 2-ruler; The 3-semicircular protractor; 4-gravity pin; The 5-sucker.
The specific embodiment
Embodiment: teaching gauge; Comprise function chi body 1, said function chi body 1 comprises ruler 2, and said ruler 2 is provided with semicircular protractor 3; The straight line of said semicircular protractor 3 is parallel with the straight line of said ruler 2; Be rotatably installed with gravity pin 4 on the said semicircular protractor 3, the rotation of said gravity pin 4 overlaps with the calibration center of said semicircular protractor 3, and said function chi body 1 is provided with sucker 5; When the utility model is drawn the straight line of different gradients on blackboard; Said gravity pin 4 is downward all the time under the effect of gravitation; The angle that it is reflected in semicircular protractor 3 can reflect the angle of inclination on ruler setting-out limit; Being provided with of sucker 5 can let the utility model be fixed on the blackboard, and that on blackboard, need not require great effort in the setting-out pins with hand, easy to use.
Claims (1)
1. teaching gauge; Comprise function chi body, it is characterized in that: said function chi body comprises ruler, and said ruler is provided with semicircular protractor; The straight line of said semicircular protractor is parallel with the straight line of said ruler; Be rotatably installed with the gravity pin on the said semicircular protractor, the rotation of said gravity pin overlaps with the calibration center of said semicircular protractor, and said function chi body is provided with sucker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201743898U CN202557102U (en) | 2012-04-14 | 2012-04-14 | Teaching ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201743898U CN202557102U (en) | 2012-04-14 | 2012-04-14 | Teaching ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202557102U true CN202557102U (en) | 2012-11-28 |
Family
ID=47206796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201743898U Expired - Fee Related CN202557102U (en) | 2012-04-14 | 2012-04-14 | Teaching ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202557102U (en) |
-
2012
- 2012-04-14 CN CN2012201743898U patent/CN202557102U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20130414 |