CN204432145U - A kind of protractor - Google Patents
A kind of protractor Download PDFInfo
- Publication number
- CN204432145U CN204432145U CN201420758284.6U CN201420758284U CN204432145U CN 204432145 U CN204432145 U CN 204432145U CN 201420758284 U CN201420758284 U CN 201420758284U CN 204432145 U CN204432145 U CN 204432145U
- Authority
- CN
- China
- Prior art keywords
- base plate
- described base
- pointer
- protractor
- dial
- 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)
Abstract
The utility model relates to a kind of protractor, comprise base plate and dial, it is characterized in that: described base plate is gular transparent plastic plate, semicircle hollow out is provided with in the middle part of described base plate, described base plate left and right sides edge is provided with graduation mark, described base plate lower limb center is provided with pointer, described pointer and base plate are rotationally connected, described pointer end is acute taper, described base plate top edge is provided with a cylindrical rubber cover, described rubber sleeve is parallel with base plate top edge, described base plate lateral edges place is provided with a plastic hoop, described plastic hoop is fixedly connected with base plate, rail groove is had between the outer rim of described dial and base plate, the slide measure that accuracy is 0.1 degree is provided with in described rail groove.A kind of protractor of the utility model, can measure the bevel angle of three-dimensional real object easily, and have the function measured length and draw parallel lines, the existence of slide measure ensure that certainty of measurement.
Description
Technical field
The utility model relates to a kind of survey tool, particularly relates to a kind of protractor.
Background technology
In routine work life, protractor is the survey tool that people often use, and existing protractor can be measured geometric angle, and the geometric angle that lines cannot be determined is difficult to measure.The protractor cost that can be used to measure three-dimensional real object of current use is high, and complex structure, is not easy to people and widely uses.And, in measuring process, may also need to measure length in kind, or require that the angular accuracy measured is higher, at this time, common protractor is just difficult to reach requirement, therefore, based on these problems that current protractor occurs in use, study a kind of multi-function protractor that can address these problems, there is important practical significance.
Utility model content
The purpose of this utility model is to provide a kind of protractor.
The technical solution of the utility model is: a kind of protractor, comprise base plate and dial, it is characterized in that: described base plate is gular transparent plastic plate, semicircle hollow out is provided with in the middle part of described base plate, described base plate left and right sides edge is provided with graduation mark, described base plate lower limb center is provided with pointer, described pointer and base plate are rotationally connected, described pointer end is acute taper, described base plate top edge is provided with a cylindrical rubber cover, described rubber sleeve is parallel with base plate top edge, described base plate lateral edges place is provided with a plastic hoop, described plastic hoop is fixedly connected with base plate, rail groove is had between the outer rim of described dial and base plate, the slide measure that accuracy is 0.1 degree is provided with in described rail groove.
Further, the semicircle hollow part of described base plate arranges a crossbeam, and crossbeam sideline is parallel with base plate lower edges.
Further, the scale registration of described dial central point is 0, and both sides, center scale registration simultaneous equal increases.
The beneficial effects of the utility model are:
A kind of protractor, can measure the bevel angle of three-dimensional real object easily, and has the function measured length and draw parallel lines, and the existence of slide measure ensure that certainty of measurement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1, base plate 2, dial 3, hollow out 4, pointer
5, rubber sleeve 6, plastic hoop 7, rail groove 8, slide measure
9, crossbeam
Detailed description of the invention
Below in conjunction with accompanying drawing, brief description is made to detailed description of the invention of the present utility model.
A kind of protractor as shown in Figure 1, comprise base plate 1 and dial 2, it is characterized in that: described base plate 1 is gular transparent plastic plate, semicircle hollow out 3 is provided with in the middle part of described base plate 1, described base plate 1 left and right sides edge is provided with graduation mark, described base plate 1 lower limb center is provided with pointer 4, described pointer 4 is rotationally connected with base plate 1, described pointer 4 end is acute taper, described base plate 1 top edge is provided with a cylindrical rubber cover 5, described rubber sleeve 5 is parallel with base plate 1 top edge, described base plate 1 lateral edges place is provided with a plastic hoop 6, described plastic hoop 6 is fixedly connected with base plate 1, rail groove 7 is had between the outer rim of described dial 2 and base plate 1, the slide measure 8 that accuracy is 0.1 degree is provided with in described rail groove 7.
Further, the semicircle hollow part of described base plate 1 arranges a crossbeam 9, and crossbeam 9 sideline is parallel with base plate 1 lower edges.
Further, the scale registration of described dial 2 central point is 0, and both sides, center scale registration simultaneous equal increases.
Working method: when use amount hornwork, be placed in determinand surface ramp parallel for protractor base plate top edge, pointer is hung naturally, after pointer is static, observes pointer and refer to that the registration on dial is oblique degree of a face, use slide measure that the number of degrees can be made to be accurate to 0.1 degree, base plate lateral edges can use measurement length, can place pen in rubber sleeve, record numeral in time, the existence of plastic hoop is convenient to hang up protractor.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (3)
1. a protractor, comprise base plate and dial, it is characterized in that: described base plate is gular transparent plastic plate, semicircle hollow out is provided with in the middle part of described base plate, described base plate left and right sides edge is provided with graduation mark, described base plate lower limb center is provided with pointer, described pointer and base plate are rotationally connected, described pointer end is acute taper, described base plate top edge is provided with a cylindrical rubber cover, described rubber sleeve is parallel with base plate top edge, described base plate lateral edges place is provided with a plastic hoop, described plastic hoop is fixedly connected with base plate, rail groove is had between the outer rim of described dial and base plate, the slide measure that accuracy is 0.1 degree is provided with in described rail groove.
2. a kind of protractor according to claim 1, is characterized in that: the semicircle hollow part of described base plate arranges a crossbeam, and crossbeam sideline is parallel with base plate lower edges.
3. a kind of protractor according to claim 1, is characterized in that: the scale registration of described dial central point is 0, and both sides, center scale registration simultaneous equal increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758284.6U CN204432145U (en) | 2014-12-04 | 2014-12-04 | A kind of protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758284.6U CN204432145U (en) | 2014-12-04 | 2014-12-04 | A kind of protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204432145U true CN204432145U (en) | 2015-07-01 |
Family
ID=53600057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420758284.6U Expired - Fee Related CN204432145U (en) | 2014-12-04 | 2014-12-04 | A kind of protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204432145U (en) |
-
2014
- 2014-12-04 CN CN201420758284.6U patent/CN204432145U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204432145U (en) | A kind of protractor | |
| CN203995340U (en) | Set square with calipers angle measurement device | |
| CN106739681A (en) | A kind of protractor with ruler | |
| CN203920157U (en) | A kind of multi-purpose telescopic ruler | |
| CN204188113U (en) | 60 ° of chamfering orifice diameter device for fast detecting | |
| CN202498908U (en) | Plate gauge combination teaching aid | |
| CN203323660U (en) | Screw rod length recognizer | |
| CN204128449U (en) | A kind of bevel protractor | |
| CN203485635U (en) | Simple angle-drawing ruler | |
| CN202734736U (en) | Fixture for workpiece angle test | |
| CN205112841U (en) | Special -purpose drawing board for building surveying and mapping drawing | |
| CN204240907U (en) | A kind of cubing measuring camshaft shoulder length | |
| CN103940314B (en) | A kind of elastic composite cylindrical roller deep cave processing special detection tool and detection method | |
| CN204095356U (en) | A kind of drawing tool | |
| CN203157498U (en) | Multifunctional scale | |
| CN202442662U (en) | Square angle gauge | |
| CN202511726U (en) | Non-zero starting point vernier caliper | |
| CN202378561U (en) | Multifunctional ruler | |
| CN203945877U (en) | Amount picture stationery | |
| CN203093518U (en) | Multifunctional combined mathematics tool | |
| CN204586247U (en) | A kind of automatic range is from compasses | |
| CN203172286U (en) | Multi-functional mathematics teaching appliance | |
| CN204313724U (en) | Annular angle groove slide calliper rule | |
| CN202533018U (en) | Teaching protractor | |
| CN204322847U (en) | Multifunctional straightedge |
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: 20150701 Termination date: 20151204 |
|
| EXPY | Termination of patent right or utility model |