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

The C-Thru Ruler Co 15” Adjustable Hinged Parallel Line Drafting Rule Tool

2 Vintage Triangle wood 12" rulers for drafting, architecture, engineering

Drafting Tools and Ruler Shapes for Architecture - Set of 3 for House Plan Furni

Rapid Rule 12” Drafting Architecture Adjustable Rotate Ruler ~ NICE!

Pickett Rapid Rule 12" Architecture Adjustable Triangular Scale Model #239 ruler

Sheffield 544 Protractor Architecture Art Ruler drafting tool measuring USA Made

Vintage Dietzgen 1656 BP Triangular Scale Ruler Architecture Drafting