CN202074903U - Combined protractor - Google Patents
Combined protractor Download PDFInfo
- Publication number
- CN202074903U CN202074903U CN2011201816682U CN201120181668U CN202074903U CN 202074903 U CN202074903 U CN 202074903U CN 2011201816682 U CN2011201816682 U CN 2011201816682U CN 201120181668 U CN201120181668 U CN 201120181668U CN 202074903 U CN202074903 U CN 202074903U
- Authority
- CN
- China
- Prior art keywords
- semi
- circle
- protractor
- scale
- plates
- 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 discloses a combined protractor, belongs to surveying and mapping instruments, and particularly relates to a protractor capable of three-dimensional measurement. The combined protractor is characterized in that two transparent semi-circle plates with centers installed on one rotating shaft can rotate freely around the rotating shaft respectively; scales from 0 DEG to 180 DEG and scale marks are drawn on one of the semi-circle plates; and only a 0 DEG scale mark penetrating the center and being parallel to the bottom edge is drawn on the other semi-circle plate. The utility model has the benefits that as the protractor consists of the two combined transparent semi-circle plates, wherein one semi-circle plate is provided with angle scales and the other semi-circle plate is only provided with the 0 DEG scale mark, during the measurement, all that is needed is to align two bottom edges of the two semi-circle plates with two edges of the to-be-measured angle respectively, therefore, the angle can be read or computed according to the corresponding scale of the 0 DEG center line of the scale-free semi-circle plate on the other semi-circle plate.
Description
Technical field
The utility model belongs to surveying and mapping tool, protractor that particularly can measurement in space.
Background technology
When measuring three-dimensional viewpoin, just can't measure with common protractor, and can not the measurement plane angle with the instrument of measurement three-dimensional viewpoin specially, it is cumbersome again according to circumstances to change instrument.
The utility model content
In order to solve the deficiency that solid angle and plane angle can not adopt instrument measurement of the same race to make troubles, the utility model provides a kind of combined type protractor, and this protractor not only can the measurement plane angle, also can measure three-dimensional viewpoin.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of combined type protractor, it is characterized in that: two its centers of circle of transparency semi-circular plate are installed in the same rotating shaft, and can rotate freely around the shaft respectively, a semi-circular plate is drawn and is carved with 0 ° to 180 ° scale and scale mark therein, and another semi-circular plate is only portrayed and passed the center of circle 0 ° line parallel with the base.
The beneficial effects of the utility model are, because having angle index and one by one, this protractor have only two transparency semi-circular plates of 0 ° of line to combine, with the both sides of two corresponding measured angular of semi-circular plate two bases difference, promptly can read or calculate the size of angle of departure during measurement according to 0 ° of center line of no scale semi-circular plate corresponding scale on another semi-circular plate.
Description of drawings
Fig. 1 is a structural representation of the present utility model,
Among the figure, 1. semi-circular plate, 2. rotating shaft, 3.0 ° of lines.
Embodiment
Embodiment of the present utility model is, as shown in the figure:
Claims (1)
1. combined type protractor, it is characterized in that: two its centers of circle of transparency semi-circular plate are installed in the same rotating shaft, and can rotate freely around the shaft respectively, a semi-circular plate is drawn and is carved with 0 ° to 180 ° scale and scale mark therein, and another semi-circular plate is only portrayed and passed the center of circle 0 ° line parallel with the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201816682U CN202074903U (en) | 2011-06-01 | 2011-06-01 | Combined protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201816682U CN202074903U (en) | 2011-06-01 | 2011-06-01 | Combined protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202074903U true CN202074903U (en) | 2011-12-14 |
Family
ID=45113003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201816682U Expired - Fee Related CN202074903U (en) | 2011-06-01 | 2011-06-01 | Combined protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202074903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910516A (en) * | 2016-05-30 | 2016-08-31 | 四川鸿鑫空间测绘有限公司 | Simple surveying and mapping angle protractor |
-
2011
- 2011-06-01 CN CN2011201816682U patent/CN202074903U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910516A (en) * | 2016-05-30 | 2016-08-31 | 四川鸿鑫空间测绘有限公司 | Simple surveying and mapping angle protractor |
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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: 20111214 Termination date: 20120601 |