AU2011100808A4 - Protractor for curved surface mapping - Google Patents
Protractor for curved surface mapping Download PDFInfo
- Publication number
- AU2011100808A4 AU2011100808A4 AU2011100808A AU2011100808A AU2011100808A4 AU 2011100808 A4 AU2011100808 A4 AU 2011100808A4 AU 2011100808 A AU2011100808 A AU 2011100808A AU 2011100808 A AU2011100808 A AU 2011100808A AU 2011100808 A4 AU2011100808 A4 AU 2011100808A4
- Authority
- AU
- Australia
- Prior art keywords
- protractor
- curved surface
- surface mapping
- ruler
- lineation
- 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.)
- Ceased
Links
Abstract
A b s t r a c t The invention relates to a protractor for curved surface mapping, which comprises a protractor body, the circle center of the protractor body is provided with a rotating shaft on which a ruder is arranged. The protractor for curved surface mapping can be bent freely to facilitate measurement and lineation for a three-dimensional curved surface, thereby improving the working efficiency. )3
Description
D e s c r i p t io n PROTRACTOR FOR CURVED SURFACE MAPPING Field of the invention The invention relates to a protractor for curved surface mapping. Background of the invention The traditional protractor is usually made of wood or hard plastic and can not be bent after molding, and thus is merely used for lineation and measurement for a two-dimensional plane and is unavailable for a three-dimensional curved surface, thereby being inconvenient for lineation and measurement and reducing the working efficiency. Summary of the invention The object of the invention is to provide a protractor for curved surface mapping, which can be bent freely to facilitate measurement and lineation for a three-dimensional curved surface and thus improves the working efficiency. In view of the technical problems, the invention employs the following scheme: a protractor for curved surface mapping comprises a protractor body, and the circle center of the protractor body is provided with a rotating shaft on which a ruler is arranged. Preferably, said protractor body is of a flexible structure which facilitates the placement of the protractor body and thus is convenient for measurement and lineation of the ruler.
D e s c r i p t io n Preferably, said ruler is of a flexible structure which facilitates the measurement and lineation for a three-dimensional curved surface. The invention has the following advantages: The technical scheme of the invention provides a protractor for curved surface mapping, which can be bent freely to facilitate measurement and lineation for a three-dimensional curved surface and thus improves the working efficiency. Brief description of the drawings Figure 1 is a structural diagram of the invention; and Figure 2 is a schematic diagram of the invention in use. Detailed description of the embodiment Referring to figure 1, a protractor for curved surface mapping comprises a protractor body 1, the circle center of the protractor body I is provided with a rotating shaft 3 on which a ruler 2 is arranged, the protractor body I is of a flexible structure, and the ruler 2 is of a flexible structure. Referring to figure 2, the protractor body I and the ruler 2 are rotate around the rotating shaft 3 and can be bent freely along the curved surface of a curved workpiece 4, and the protractor I cooperated with the ruler 2 not only can measure and draw lines on a two-dimensional plane but also can directly measure and draw various angles and straight lines on a three-dimensional curved surface. Therefore, the protractor has simple structure, convenient use and low cost and meets requirements of carpenters and engineering personnel.
Claims (3)
1. A protractor for curved surface mapping comprising a protractor body (1), characterized in that the circle center of the protractor body (1) is provided with a rotating shaft (3) on which a ruler (2) is arranged.
2. The protractor for curved surface mapping according to claim 1, characterized in that the protractor body (1) is of a flexible structure.
3. The protractor for curved surface mapping according to claim 1, characterized in that the ruler (2) is of a flexible structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2011100808A AU2011100808A4 (en) | 2011-07-01 | 2011-07-01 | Protractor for curved surface mapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2011100808A AU2011100808A4 (en) | 2011-07-01 | 2011-07-01 | Protractor for curved surface mapping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2011100808A4 true AU2011100808A4 (en) | 2011-09-22 |
Family
ID=45441983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2011100808A Ceased AU2011100808A4 (en) | 2011-07-01 | 2011-07-01 | Protractor for curved surface mapping |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2011100808A4 (en) |
-
2011
- 2011-07-01 AU AU2011100808A patent/AU2011100808A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |