CN203371962U - Multipurpose ruler for geographical teaching - Google Patents
Multipurpose ruler for geographical teaching Download PDFInfo
- Publication number
- CN203371962U CN203371962U CN201320468968.8U CN201320468968U CN203371962U CN 203371962 U CN203371962 U CN 203371962U CN 201320468968 U CN201320468968 U CN 201320468968U CN 203371962 U CN203371962 U CN 203371962U
- Authority
- CN
- China
- Prior art keywords
- ruler
- straight
- semicircular protractor
- gravity
- compass
- 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
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a multipurpose ruler for geographical teaching. The multipurpose ruler comprises a straight ruler. A semicircular protractor is arranged on the straight ruler. The straight line side of the semicircular protractor is parallel to the straight line side of the straight ruler. A gravity needle is installed on the semicircular protractor in a rotating mode. The rotating axis of the gravity needle coincides with the center of the scale marks of the semicircular protractor. A gradienter and a compass are arranged on the straight ruler. A longitude and latitude coordinate system is further arranged on the straight ruler. When the multipurpose ruler is used for drawing straight lines with different gradients on a blackboard, the gravity needle is arranged downwards all the time under the action of the gravity, the angle, reflected in the semicircular protractor, of the gravity needle can reflect the inclination angle of the side, used for drawing the straight lines, of the straight ruler, the horizontal plane can be aligned due to the arrangement of the gradienter, the direction can be pointed due to the arrangement of the compass, the longitude and latitude coordinate system can be used for judging graticules and judging the mutual positions of two points, and the use is easy and convenient.
Description
Technical field
The utility model relates to a kind of teaching aid, relates to specifically a kind of multipurpose ruler.
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 ruler for geography teaching that facilitates geographical teaching, diverse in function is provided.
For addressing the above problem, the technical scheme that the utility model adopts is: Multifunctional ruler for geography teaching, comprise ruler, described ruler is provided with semicircular protractor, the straight line of described semicircular protractor is parallel with the straight line of described ruler, is 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, described ruler is provided with level meter and compass, also is provided with the longitude and latitude coordinate system on described ruler.
The utility model is taked above technical scheme, have the following advantages: Multifunctional ruler for geography teaching, comprise ruler, described ruler is provided with semicircular protractor, the straight line of described semicircular protractor is parallel with the straight line of described ruler, is 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, described ruler is provided with level meter and compass, also is 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, arranging of level meter can the centering horizontal plane, compass the direction of can making a comment or criticism is set, 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: the 1-ruler; The 2-semicircular protractor; 3-gravity pin; The 4-level meter; The 5-compass; 6-longitude and latitude coordinate system.
The specific embodiment
Embodiment: Multifunctional ruler for geography teaching, comprise ruler 1, described ruler 1 is provided with semicircular protractor 2, the straight line of described semicircular protractor 2 is parallel with the straight line of described ruler 1, be rotatably installed with gravity pin 3 on described semicircular protractor 2, the calibration center superposition of the rotation of described gravity pin 3 and described semicircular protractor 2, described ruler 1 is provided with level meter 4 and compass 5, on described ruler 1, also is provided with longitude and latitude coordinate system 6; When the utility model is drawn the straight line of different gradients on blackboard, described gravity pin 3 is downward all the time under the effect of gravitation, the angle that it reflects in semicircular protractor 2 can reflect the angle of inclination on ruler setting-out limit, arranging of level meter 4 can the centering horizontal plane, compass 5 the direction of can making a comment or criticism is set, longitude and latitude coordinate system 6 can be for the judgement of graticules and the judgement of 2 mutual alignments, easy to use.
Claims (1)
1. Multifunctional ruler for geography teaching, comprise ruler, described ruler is provided with semicircular protractor, it is characterized in that: 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, described ruler is provided with level meter and compass, also is provided with the longitude and latitude coordinate system on described ruler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468968.8U CN203371962U (en) | 2013-07-26 | 2013-07-26 | Multipurpose ruler for geographical teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468968.8U CN203371962U (en) | 2013-07-26 | 2013-07-26 | Multipurpose ruler for geographical teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203371962U true CN203371962U (en) | 2014-01-01 |
Family
ID=49834514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320468968.8U Expired - Fee Related CN203371962U (en) | 2013-07-26 | 2013-07-26 | Multipurpose ruler for geographical teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203371962U (en) |
-
2013
- 2013-07-26 CN CN201320468968.8U patent/CN203371962U/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 | ||
| 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 |