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

Triangular Ruler STAEDTLER-MARS 987 19-31 ARCHITECT Ruler Plastic Japan

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

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

VTG Staedtler Mars 987 18-31 Trianglular Scale Ruler Drafting Architect Engineer

Staedtler Mars 987 19-31 Trianglular Scale Ruler Drafting Architect Engineer

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

STAEDTLER-MARS 987 18-31 Architect Engineering Scale Triangle Drafting Ruler 12"