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

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

Alvin 3 Sided Engineer Scale No 119 PC Triangular Drafting Ruler W-Germany

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

Vintage Gramercy 530 Architect Triangular Scale Drafting Ruler West Germany

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#K) Staedtler Mars 987 18-31 Architect Scale - 12 Inches - Made in Japan

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