Lot of 3 VintagePlastic Engineering Architect Scale Triangle Drafting Rulers 12"

Lot 3 Triangular 3-sided drafting rulers, C-Thru 657, Pickett P-232A, Unbranded

Vintage Keuffel & Esser NY 3 Sided Wood Drafting Rulers LOT of 2

Lot Of 5 Vintage Architect's / Engineer's 6" Advertising Scale Rulers-E

Vintage Rulers 3 Sided Drafting Engineering 12" Lot Of 3 Made In Germany & Japan

Vintage Architect Rulers 3-sided Drafting Triangular Lot of 3. See Description

Lot of 5 Engineer Architect Drafting Triangular Rulers - Plastic, Metal & Wood

VINTAGE Wood Hard Plastic Triangle Right Angle SET & Architect Rulers ⭐Lot of 3