Rapid Rule Aluminum Rotating Scale Ruler engineering & Vtg Alvin Triangular

DIAL - A - SCALE ARCHITECTURAL ROTATING SCALE, BY RAPID RULE

Rapid Rule - 6” Drafting / Architecture - Adjustable Rotating Ruler

12-Inch Architectural and Engineering Scale Ruler Set (Imperial) | Laser-Etched

Lot of 2: RAPID RULE & RULE II rulers

Ruler Lot Drafting Engineer Rapid Rule Multi-Scale Alvin Staedtler 987 Drawing

3 Pack 12 Inch Solid Aluminum Triangular Architect Scale Ruler Set, 3-Colors-Gro

Vintage Lot 2 Bruning Pocket Drafting Scale Ruler 6" & Dietzgen 5" Sliding Rule