| Location | St. Paul |
| Location Code | E - Marking and Layout |
| Manufacturer | Edmark |
| Model | 12" U.K. Design No. 1057515 |
Drafting tool
Twelve Ways of using Rolling Ruler in Engineering Drawing
https://www.youtube.com/watch?v=aCwWls0exVw
| Location | St. Paul |
| Location Code | E - Marking and Layout |
| Manufacturer | Edmark |
| Model | 12" U.K. Design No. 1057515 |
Drafting tool
Twelve Ways of using Rolling Ruler in Engineering Drawing
https://www.youtube.com/watch?v=aCwWls0exVw