Vintage 12" PICKETT P-232E-ES Triangular Drafting Architects Scale Ruler

Vintage 12" PICKETT P-232 E-ES Triangular Drafting Architects Scale Ruler

Vintage 12" Sterling #481 Engineering/Drafting Triangular Ruler

Vintage 12" PICKETT P-232 A-ES Triangular Drafting Architects Scale Ruler

Alvin 3 Sided Engineer Scale No 119 PC Triangular Drafting Ruler W-Germany

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

Alvin 244B Drafting Engineer Scale 12” Triangular Ruler W/Case Bamboo Japan Used

Vintage US STD Wooden 3-sided Triangular Drafting Ruler Scale U.S. Std 12"