| Manufacturer | Mastercraft |
| Model | 57-7807-6 |
Square for emasuring rafter angles, but looks like a triangle
Toronto Tool Library - Parkdale
http://www.torontotoollibrary.com
1499 Queen Street Westhttp://www.torontotoollibrary.com
Toronto Tool Library
Toronto, M6R 1A3
Canada
647-498-1258