Vintage K & E DORIC Genuine Boxwood Triangular Ruler Made In Germany #56 3850

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

Vintage Doric K&E Favorite Drafting Tool Compass Set with Case Germany

Vintage K&E Doric 56 3850 Triangular Wood Engineer's Scale Ruler 12"

Vintage Genuine Boxwood Drafting Ruler Divided Charvoz Made in W Germany

Vintage K&E Doric N8881 Triangular Architect Scale Ruler - Engraved Initials

Vintage Ruler - Stewart 510 USST’D - Genuine Boxwood - Made in W Germany

Keuffel & Esser Doric All-Plastic Triangular Scale Architect's Ruler 12 Inch