Lot of 5 Drafting / Architect / Engineering Plastic 3-Sided Triangle Rulers READ

Vintage Engineering Drafting Tools & Supplies

Rare 3-Sided Triangle Drafting Engineers Architect small ruler The blue print Co

Drafting Ruler Architect Advertising Brass 3 Sided Universal Associates Tulsa

1947 to 1950 Keuffel & Esser Co NY Wood Architects Triangle Scale Drafting Ruler

Lot of 8 Triangle (3-sided)Architect Drawing Scale Rulers -Vintage Wood &Plastic

C-Thru Ruler Co TS-656 Architect Engineer 12" Drafting Tool Triangular Tri Color

16PCS Drafting Tools with 12‘’ Aluminum Architect Scale Ruler, Mechanical Pencil