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

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

The Riggs & Bro. Phila. Adjustable Hinged Parallel Line Nautical /Drafting Tool

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

Vintage The C-Thru Ruler Co. USA Drafting Tool Adjustable Parallel 18" Line Bar

Vintage MultiDraft Drafting Arm Parallel Straightedge Protractor Tool Adjustable

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