Vintage Ford Metric Machine Drafting Ruler 1/2mm Scale 300mm Double-Sided Metal

Dietzgen 1626 Wooden 3-Sided Triangular Ruler Scale Drafting Vintage USA 12" Woo

Vintage U.S. Std 18″ Drafting Machine Scale Ruler Cleveland Drafting Machine Co

Vintage ALLIED 2455 Drafting Machine Scale Ruler 2-4"

Dietzgen 1626 Wooden VTG 3 Sided Triangular 12" Ruler Scale Drafting Vintage USA

Vintage 1960s B.K.Elliott Co Triangular Drafting Engineers Ruler 71604 NOS USA

Vintage ALLIED 2454 Drafting Machine Scale Ruler 1 1/2-3"

Vintage Pickett 419M Aluminum Drafting Ruler with Pocket Clip USA