Vintage The C-Thru Ruler Co USA Drafting Tool Adjustable Parallel 15" Line Bar

New ESCO 18” Adjustable Metal Hinged Parallel Line Drafting Rule Tool

C-Thru Ruler Company Folding Parallel Rule 15" Clear Acrylic Adjustable

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

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

The C-Thru Ruler Co USA Vintage Drafting Tool Adjustable Parallel 15" Line Bar

Multi-Purpose Drawing Parallel Rolling Ruler, 12 Inch Drawing Design Ruler fo...

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