Triangular Ruler Vintage Wood Dietzgen 31626 Architect 12” U.S. STD

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

Wood Dietzgen 12” Triangle Scale Ruler Engine Divided 31636 Drafting

LOT OF 2 - Vintage Wood Dietzgen 11526 Architect 12” Triangular Ruler U.S.A

Lot of 2 Vintage Dietzgen 11626 Architect Drafting Triangular Ruler 12" Wood

Vintage Dietzgen No. 31626 Wooden 3-Sided Triangular Scale Ruler--for drafting

Vintage 3 Sided 12" DIETZGEN Wood Ruler 31636 Wooden Rule Drafting Engineering

Vintage Dietzgen No.626 Architect Divided Triangular Scale Ruler Engineer