Vintage Bruning 2126P Triangular Engineer Scale Ruler 12” Drafting Tool

VTG The C-Thru Ruler Co. 12” Hinged Parallel Drafting Ruler Bloomfield Conn. USA

Vintage 12" Wooden Desk Ruler with Brass Edge - Made in USA - Drafting Tool

Vintage Roll-O-Ruler CP-401 12” Drafting Tool – Ruler Protractor Compass w/ Box

Vtg ESCO PARALLEL RULER 12” DRAFTING DRAWING Architecture Engineer Tool

Rolling Ruler 12" Multi-Purpose Drafting Drawing Protractor Parallel Tool

Vintage 12" Engineers Triangular 3 Side Ruler 835 Architect Drafting Tool

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