Multi-Purpose Drawing Parallel Rolling Ruler, 12 Inch Drawing Design Ruler for M

Multi-Purpose Drawing Parallel Rolling Ruler, 12 Inch Drawing Design Ruler

The C-Thru Ruler Co. 15 inch Folding Parallel Rule. Made in USA

Multi-Purpose Drawing Parallel Rolling Ruler, 12 Inch Drawing Design Ruler

Vintage Navigator / Architect / Drafting Parallel Ruler

U. K. Design Multi-Purpose Drawing Parallel Rolling Ruler, 12 Inch