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

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

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

Staedtler White Plastic Architect Triangular Scale Ruler 987 19-31 / Brazil

VINTAGE STAEDTLER MARS RULER 987 18-31 ARCHITECT 12' TRIANGULAR SCALE Germany

VTG Architect Ruler Staedtler Mars 987 19-31 Japan Drafting Engineer Plastic

Staedtler Mars 987‑18‑31 Architect Triangular Scale Ruler – Made in Japan

Vintage—Staedtler Mars Triangular Engineering Ruler 987 18-1