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Staedtler-Mars 12” Triangular Scale Ruler 987 18-34 Engineer Germany Color Bars

Vtg Staedtler Mars Engineer 12" Triangular Scale Ruler 987 18-34 Japan

STAEDTLER Mars 987 18-34 Engineer Scale Draft Ruler Germany

Staedtler-Mars 987 18-34 Engineer Triangular 3 Sided Ruler Colors Japan

Staedtler-Mars 987 18-34 Engineer Scale Triangle Drafting Ruler 12" Japan White

Staedtler-Mars 987 18-34 Engineer Triangle Scale Drafting Ruler 12'' Japan White

Vintage Staedtler Mars 12" Triangular Metric Ruler Scale White 987 18-34 JAPAN