CN203286940U - Protractor - Google Patents
Protractor Download PDFInfo
- Publication number
- CN203286940U CN203286940U CN2013203090443U CN201320309044U CN203286940U CN 203286940 U CN203286940 U CN 203286940U CN 2013203090443 U CN2013203090443 U CN 2013203090443U CN 201320309044 U CN201320309044 U CN 201320309044U CN 203286940 U CN203286940 U CN 203286940U
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- CN
- China
- Prior art keywords
- protractor
- chute
- air level
- protractor body
- limited screw
- 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 - Lifetime
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a protractor comprising a semicircular protractor body. Scale rings are arranged on the protractor body, scale lines are mounted on the bottom of the protractor body, a circle center of the protractor body is connected with a scale plate by a first position-restricted screw and the scale plate can rotate along the first position-restricted screw. A semicircular chute is disposed on a middle part of the protractor body, a long chute is arranged on the scale plate, a level bubble is mounted on the long chute by a level-bubble fixed frame and a second position-restricted screw is disposed on the long chute. The bottom of the second position-restricted screw is slidably disposed in the semicircular chute. The protractor provided by the utility model has the advantages of simple structure, convenient measurement, high precision and various functions and can measure measuring objects of various angles.
Description
Technical field
The utility model relates to measures the apparatus technical field, is specifically related to a kind of protractor.
Background technology
In traditional protractor use procedure, usually encounter the scale that can't reach protractor because of the length of side of tested angulation, must extend the length of side ability pin-point reading of tested angulation, wipe with rubber again after measurement, often troublesome is endlessly.And in the middle of dull and stereotyped solid protractor, 17 radiant rays are arranged, and, because of irremovable, also can only measure the integer angle, measuring accuracy is not high.
Summary of the invention
Technical problem to be solved in the utility model is to provide protractor a kind of simple in structure, easy to use.
Technical problem to be solved in the utility model realizes by the following technical solutions:
a kind of protractor, comprise a semicircle protractor body, be provided with calibration loop on described protractor body, bottom at described protractor body is provided with scale mark, the circle centre position of described protractor body is connected with a scaleplate by the first limited screw, this scaleplate can rotate along the first limited screw, be provided with half circular chute in the middle of described protractor body, be positioned on the protractor body below described semicircle chute and be provided with side by side three air level fixed frames, described scaleplate is provided with long chute, by the air level fixed mount, air level is installed on described long chute, described long chute is provided with the second limited screw, described the second limited screw basal sliding is located in semicircle chute.
Preferably, described scaleplate is provided with the pencil fixed mount, on described pencil fixed mount, pencil is installed.
Preferably, described air level fixed mount comprises on air level fixed frame under fixed frame and air level.
The beneficial effects of the utility model: the utility model is simple in structure, and it is convenient to measure, and precision is high, and diverse in function can be measured the measurement object of various angles.
Description of drawings
Fig. 1 is front view of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the utility model stereographic map.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand,, below in conjunction with concrete diagram, further set forth the utility model.
as Fig. 1, Fig. 2 and shown in Figure 3, a kind of protractor, comprise a semicircle protractor body 1, be provided with calibration loop on protractor body 1, bottom at protractor body 1 is provided with scale mark, the circle centre position of protractor body 1 is connected with a scaleplate 12 by the first limited screw 13, this scaleplate 12 can rotate along the first limited screw 13, be provided with half circular chute 14 in the middle of protractor body 1, be positioned on protractor body 1 below semicircle chute 14 and be provided with side by side three air level fixed frames 2, be respectively from left to right 45 degree, 90 degree and 180 degree, the convenient gradient or the angle of directly measuring the integer angle, also can use as surveyor's staff, scaleplate 12 is provided with long chute 9, by air level fixed mount 11, air level 10 is installed on long chute 9, long chute 9 upper ends are provided with the second limited screw 5, the second limited screw 5 basal slidings are located in semicircle chute 14, scaleplate 12 is provided with pencil fixed mount 8, pencil 7 is installed on pencil fixed mount 8, air level fixed mount 11 comprises on air level fixed frame 3 under fixed frame 4 and air level.Be equipped with nut 6 at the first limited screw 13 and the second limited screw 5 ends.
Air level is that when air level mediates, the leading portion reading is exactly the angle of measurement face for the gradient of measuring a face, and that just measures face without air level and rectangular direct measurement does not need air level exactly if angle that two faces form is arranged.
Above demonstration and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. protractor, comprise a semicircle protractor body, be provided with calibration loop on described protractor body, it is characterized in that: the bottom at described protractor body is provided with scale mark, the circle centre position of described protractor body is connected with a scaleplate by the first limited screw, this scaleplate can rotate along the first limited screw, be provided with half circular chute in the middle of described protractor body, be positioned on the protractor body below described semicircle chute and be provided with side by side three air level fixed frames, described scaleplate is provided with long chute, by the air level fixed mount, air level is installed on described long chute, described long chute is provided with the second limited screw, described the second limited screw basal sliding is located in semicircle chute.
2. protractor according to claim 1, it is characterized in that: described scaleplate is provided with the pencil fixed mount, on described pencil fixed mount, pencil is installed.
3. protractor according to claim 1 is characterized in that: described air level fixed mount comprises on air level fixed frame under fixed frame and air level.
4. protractor according to claim 1, it is characterized in that: described the first limited screw and the second limited screw end are equipped with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203090443U CN203286940U (en) | 2013-09-11 | 2013-09-11 | Protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203090443U CN203286940U (en) | 2013-09-11 | 2013-09-11 | Protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203286940U true CN203286940U (en) | 2013-11-13 |
Family
ID=49543298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203090443U Expired - Lifetime CN203286940U (en) | 2013-09-11 | 2013-09-11 | Protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203286940U (en) |
-
2013
- 2013-09-11 CN CN2013203090443U patent/CN203286940U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |