Vintage Navigator / Architect / Drafting Parallel Ruler

The C-Thru Ruler Co USA Vintage Drafting Tool Adjustable Parallel 15" With box

Vintage Mayline Drafting Mechanical Parallel Line Ruler 15 inch Sheboygan WI

Lot of 4 Cardinell Drafting Board Attachements for Parallel Straightedge No.1730

Vintage SAN's Roll N Ruler Drafting Tool w Box Instructions Rolling Ruler

Vintage Alvin #295 Parallel Glider Drafting Tool w/ Original Box & Instructions

Drafting Tool Lot, Compasses +

The C-Thru Ruler Co USA Vintage Drafting Tool Adjustable Parallel 15" In Box