12" architect scale ruler DIETZGEN 1667 BP, 21626, yellow color

Vtg DIETZGEN Architecht Engineer Divided Triangular Scale Ruler Made In USA

(2) Dietzgen Excello Drafting Ruler 1590 Vintage 12" Length USA Made 1590, 1593D

Vintage DORIC Genuine Boxwood Triangular Ruler Made In Germany #56 3852

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

Triangular Drafting 12” Ruler Bruning 72-857 Architect Scale Wooden Vintage

DIETZGEN 31626 ENGINE DIVIDED TRIANGULAR WOODEN RULER

Dietzgen “31626” Engine Divided Wooden Triangular 12” Scale