2 Vintage U.S. ST'D – POST Wood Architect Triangular Drafting Ruler 7311 & 7301

2 Vintage 12" Triangular Scale Drafting Ruler Pearwood and A&E, Germany & USA

Vtg Tacro 4782 Architect 3 Sided Triangular Scale Ruler 12 Scales Drafting F5

Aluminum Triangular Architect Ruler w/Laser-Etched Imperial Drafting Scales 12"

Vintage 12" Sterling #481 Engineering/Drafting Triangular Ruler

Vtg Dietzgen 31626 Drafting Triangular Ruler 12" Wood, USA

Vintage Architects Scale Drafting Triangular Ruler Engineer 12" Lot of 6

Vintage Post Boxwood 3-Sided Ruler 7311 Engineering, Drafting