GB190527288A - An Improved Device for Facilitating Drawing Work. - Google Patents
An Improved Device for Facilitating Drawing Work.Info
- Publication number
- GB190527288A GB190527288A GB190527288DA GB190527288A GB 190527288 A GB190527288 A GB 190527288A GB 190527288D A GB190527288D A GB 190527288DA GB 190527288 A GB190527288 A GB 190527288A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- guiding
- sliding
- bar
- ruler
- 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
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
27,288. Hunsemann, B. Dec. 30. Parallel rulers; protractors; squares.-Relates to instruments for use in drawing, designed to replace the T -square and protractor. The guiding- bar a, b, which is adjustable in length, can be attached to the drawing-board or book by clips c, d. A sleeve h, sliding on the guiding- bar, carries an adjustable boss i to which a detachable ruler l is hinged. Sliding in a groove formed in the ruler l is a stock o, carrying a pivoted protracting arm s together with a graduated arc and pointer, and a spring catch is provided for fixing the arm in standard positions such as thirty degrees, forty-five degrees, &c. The arm may also be fixed in any position by the screwp.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190527288T | 1905-12-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190527288A true GB190527288A (en) | 1906-04-05 |
Family
ID=32202741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190527288D Expired GB190527288A (en) | 1905-12-30 | 1905-12-30 | An Improved Device for Facilitating Drawing Work. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190527288A (en) |
-
1905
- 1905-12-30 GB GB190527288D patent/GB190527288A/en not_active Expired
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