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

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

Staedtler 987 19-31 Triangular 12" Architect Scale

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

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

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

Vintage Staedtler Triangular Scale Drafting Ruler 987-19-31 Architect 12" Japan

Vintage—Staedtler Mars Triangular Engineering Ruler 987 18-1