Staedtler-Mars 987 18-31 Architect Scale Triangle Drafting Ruler Made In Germany

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

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

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

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

Vintage Staedtler-Mars 987 18-31 Triangular Architect Drafting Ruler 12"

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

Staedtler Professional Architectural Mars Triangular Scale New Aluminum