Vintage 12" STERLING Triangular Drafting Architects Scale Ruler

K&E 1621W PARAGON RULER Drafting ARCHITECT SCALE Star Quality KEUFFEL ESSER K&E

K&E 1621W TRIANGULAR RULER Vintage ARCHITECT SCALE Star Quality KEUFFEL & ESSER

Vintage K&E Beveled Architect's Scale Drafting Ruler with Leather Case

Vintage DIETZGEN 31626 Triangular Drafting Architects Scale Wood Ruler

Vintage Pearwood Tacro 4846 U.S. ST'D. Architect Scale Drafting Triangular Ruler

Triangular Scale Ruler Eugene Dietzge 1667-BG Germany K & E 1621w USA With Cases

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