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

Vintage Staedtler-Mars 987 19-34 Engineer Triangle Drafting Ruler 12" Germany

STAEDTLER-MARS 987 19-34 Engineer Engineering Scale Triangle Drafting Ruler 12"

Vintage Staedtler-Mars 987 19-34 Engineer Triangle Drafting Ruler 12" Germany

Vintage Staedtler-Mars 987 19-31 Architect Triangle Drafting Ruler 12" Germany

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

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

2-STAEDTLER-MARS 987 19-34 & 19-31 Engineer & Architect Triangle 12” Ruler