Staedtler-Mars 987 19-31 Architect Scale Triangle Drafting Ruler White 12" VTG

Vintage 12" STAEDTLER MARS 987 19-31 Triangular Drafting Architects Scale Ruler

Staedtler Mars Architect Scale Ruler 987 19-31 Triangular Drafting Scale Japan

Staedtler-Mars 987 19-31 Architect Scale Triangle Drafting Ruler White 12" VTG

STAEDTLER 987 19-31 Architect Ruler Eng. Scale Triangle Drafting 12" Japan

Staedtler-Mars 987 19-4 Architect Scale Triangle Drafting Ruler White 12" VTG

Staedtler-Mars 987 19-34 Engineer Engineering Scale Triangle Drafting Ruler 12”

Vintage Staedtler Triangular Scale Drafting Ruler 987-19-31 Architect 12" Japan