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

TRIANGULAR WOODEN ENGINEER RULERS C-THRU TS-651 STAEDTLER MARS 987 18-34

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

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

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

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

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

*VINTAGE* STAEDTLER-MARS 987 18-31 Triangular Drafting Scale with Case