GB1006685A - Improvements in and relating to draughting devices - Google Patents
Improvements in and relating to draughting devicesInfo
- Publication number
- GB1006685A GB1006685A GB997263A GB997263A GB1006685A GB 1006685 A GB1006685 A GB 1006685A GB 997263 A GB997263 A GB 997263A GB 997263 A GB997263 A GB 997263A GB 1006685 A GB1006685 A GB 1006685A
- Authority
- GB
- United Kingdom
- Prior art keywords
- square
- protractor
- extension
- potractor
- hypotensive
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
- B43L7/10—Plural straightedges relatively movable
- B43L7/12—Square and pivoted straightedges
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
1,006,685. Drawing-appliances. L. E. RUSSELL and R. PECK. March 2,1964 [March 13, 1963], No. 9972/63. Heading G1X. A drawing appliance comprises a rightangled set-square 1 which carries for rotation relative thereto about the median point of its hypotensive a potractor 2 having a part circular edge marked with a scale of degrees 3 readable against marks 4, 5 on the set-square 1, and a straight edge which in normal position is coincident with the hypotensive edge of the set-square. The protractor 2 is located in a cut-out portion of the square 1 so that it is co-planar therewith and is carried by a bridge-piece 7 on pivot means having a clamping head 9 to hold the potractor in an angularly adjusted position. The protractor may be provided with an extension 6 with parallel edges, the square 1 and protractor being of transparent plastics material and the edges of the square and the extension 6 being suitably bevelled. If the extension 6 is not provided the protractor 2 may be rotated in either direction from its normal position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB997263A GB1006685A (en) | 1963-03-13 | 1963-03-13 | Improvements in and relating to draughting devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB997263A GB1006685A (en) | 1963-03-13 | 1963-03-13 | Improvements in and relating to draughting devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1006685A true GB1006685A (en) | 1965-10-06 |
Family
ID=9882171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB997263A Expired GB1006685A (en) | 1963-03-13 | 1963-03-13 | Improvements in and relating to draughting devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1006685A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3715500A1 (en) * | 1987-05-09 | 1988-12-01 | Reiner Karschoeldgen | Set square |
-
1963
- 1963-03-13 GB GB997263A patent/GB1006685A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3715500A1 (en) * | 1987-05-09 | 1988-12-01 | Reiner Karschoeldgen | Set square |
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