CN203216406U - Vernier bevel protractor with division value of 5 ' and measurement range of 0-320 degrees - Google Patents
Vernier bevel protractor with division value of 5 ' and measurement range of 0-320 degrees Download PDFInfo
- Publication number
- CN203216406U CN203216406U CN 201320239695 CN201320239695U CN203216406U CN 203216406 U CN203216406 U CN 203216406U CN 201320239695 CN201320239695 CN 201320239695 CN 201320239695 U CN201320239695 U CN 201320239695U CN 203216406 U CN203216406 U CN 203216406U
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- scale
- vernier
- bevel protractor
- measurement range
- reading
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- Expired - Fee Related
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Abstract
The utility model discloses a vernier bevel protractor with a division value of 5 ' and a measurement range of 0-320 degrees. The vernier bevel protractor is mainly formed by a main scale, a vernier scale, a right angle ruler and a ruler. There are 12 scale divisions on the vernier scale and each scale division is 13 /12 degrees. From a first scale line of a rightmost side on the vernier scale, ''0'', ''15'', ''30'', ''45'', and ''60'' scale line reading marks are successively marked at intervals of three scale divisions from right to left. The scale lines on the vernier scale of the vernier bevel protractor of the utility model are sparse so that reading is easy to carry out. During angle measurement, the vernier bevel protractor is practical and convenient.
Description
Technical field
The utility model belongs to the survey instrument scope, relate to a kind of vernier bevel protractor, particularly a kind of scale division value and be 5 ' measurement range be 0～320 ° of vernier bevel protractor.
Background technology
The vernier bevel protractor is the measurement of angle instrument of using always, all indicates the reading groove on the main scale of vernier bevel protractor and the vernier scale.At present, the minimum calibration that known measurement range commonly used is 0～320 ° of vernier bevel protractor main scale is 1 °, and minimum calibration is all less than the minimum calibration of main scale on the vernier scale.
Summary of the invention
The technical problems to be solved in the utility model, be a kind of scale division value that can make things convenient for reading of exploitation be 5 ' measurement range be 0～320 ° of vernier bevel protractor, minimum calibration is greater than the minimum calibration of main scale on its vernier scale.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The utility model be a kind of scale division value be 5 ' measurement range be 0～320 ° of vernier bevel protractor, it mainly is made up of main scale, vernier scale, try square, ruler, has 12 calibration on the described vernier scale, 12 calibration etc. divide 13 °, each calibration is 13 °/12.
Rightmost article one groove from the described vernier scale, right-to-left 3 calibration of whenever being separated by indicate the groove reading mark of " 0 ", " 15 ", " 30 ", " 45 ", " 60 " successively.
The number reading method of the utility model vernier bevel protractor is as follows: the reading (reading number of degrees integer) of reading the indicated main scale in the left side of " 0 " groove on the vernier scale earlier, judge that again which root groove on the vernier scale overlaps with groove on the main scale, the reading of reading angular " ' " is added in the back of main scale reading.
By technique scheme, the utlity model has following beneficial effect: the groove on the vernier scale is comparatively sparse, thereby easier reading, and is more practical and convenient when taking measurement of an angle.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Accompanying drawing be a kind of scale division value of the present utility model be 5 ' measurement range be the synoptic diagram of 0～320 ° of vernier bevel protractor.
Among the figure: 1. main scale 2. vernier scales 3. try squares 4. rulers.
Embodiment
In the accompanying drawings, a kind of scale division value of the present utility model is 5 ' measurement range be that 0～320 ° of vernier bevel protractor is made up of main scale 1, vernier scale 2, try square 3 and ruler 4, have 12 calibration on the described vernier scale 2, each calibration is 13 °/12.The minimum calibration of described main scale 1 still is 1 °.
The 1st groove of rightmost from the described vernier scale 2, right-to-left 3 calibration of whenever being separated by indicate the groove reading mark of " 0 ", " 15 ", " 30 ", " 45 ", " 60 " successively.
When taking measurement of an angle with vernier bevel protractor described in the utility model, read the reading (reading number of degrees integer) of the indicated main scale 1 in the left side of " 0 " groove on the vernier scale 2 earlier, judge that again which root groove on the vernier scale 2 overlaps with groove on the main scale 1, the reading of reading angular " ' " is added in the back of main scale reading.
Scale division value described in the utility model is 5 ' measurement range be that the measuring principle of 0～320 ° of vernier bevel protractor is as follows: shown in the accompanying drawing, when the basic chi of vernier bevel protractor and ruler close up, " 0 " groove on the vernier scale 2 and " 0 " groove on the main scale 1 overlap, and shared arc length just in time equals 13 ° between " 0 " groove of vernier scale 2 and " 60 " groove.Vernier scale 2 the right grooves this moment several the 2nd grooves (reading be 5 ') left side 5 of 89 ° of grooves on main scale 1 ' locate left.When taking measurement of an angle be 5 ' object the time, vernier scale 2 turns right 5 ', the 1st groove in vernier scale 2 the right this moment several the 2nd grooves left just in time overlaps with 89 ° of grooves on the main scale 1, the reading of vernier bevel protractor is 5 '.The mutual alignment of the number reading method of all the other angles by changing basic chi and ruler 4, try square 3 and the like.
Claims (2)
- A scale division value be 5 ' measurement range be 0～320 ° of vernier bevel protractor, mainly formed by main scale, vernier scale, try square, ruler, it is characterized in that: have 12 calibration on the described vernier scale, 12 calibration etc. divide 13 °, and each calibration is 13 °/12.
- According to claim 1 a kind of 5 ' measurement range be 0～320 ° of vernier bevel protractor, it is characterized in that: rightmost article one groove from the described vernier scale, right-to-left 3 calibration of whenever being separated by indicate the groove reading mark of " 0 ", " 15 ", " 30 ", " 45 ", " 60 " successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239695 CN203216406U (en) | 2013-05-07 | 2013-05-07 | Vernier bevel protractor with division value of 5 ' and measurement range of 0-320 degrees |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239695 CN203216406U (en) | 2013-05-07 | 2013-05-07 | Vernier bevel protractor with division value of 5 ' and measurement range of 0-320 degrees |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203216406U true CN203216406U (en) | 2013-09-25 |
Family
ID=49205933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320239695 Expired - Fee Related CN203216406U (en) | 2013-05-07 | 2013-05-07 | Vernier bevel protractor with division value of 5 ' and measurement range of 0-320 degrees |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203216406U (en) |
-
2013
- 2013-05-07 CN CN 201320239695 patent/CN203216406U/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: 20130925 Termination date: 20150507 |
|
| EXPY | Termination of patent right or utility model |