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

Ruler: DIETZGEN 1626 some wear vintage triangle ruler

DIETZGEN 31626 ENGINE DIVIDED TRIANGULAR WOODEN RULER

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

Vtg DIETZGEN Architecht Engineer Divided Triangular Scale Ruler Made In USA

vtg K & E Doric Jupiter No 9406 B Drafting Set Germany complete and nice

12” Triangular EngineeringDraftsman Scale. Wooden

Vintage K&E Doric 56 3852 Triangular Ruler - Genuine Boxwood - MADE IN GERMANY