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

STAEDTLER 12in Engineer Scale Ruler - Triangular Engineering Ruler with 6 Scales

Staedtler Architect Triangle Scale Ruler 12" White Drafting Draw School Office

New Staedtler 12” scale ruler imperial 98719-31BK made in Germany

12 Inch Engineer Scale Ruler Aluminum Triangular Drafting Tool Imperial 6 Scales

Staedtler-Mars 987 19-34 Engineer Engineering Scale Triangle Drafting Ruler 12”

Staedtler-Mars 987 18-34 Engineer Rule Scale Ruler Made In Japan

Vintage Architects Scale Drafting Triangular Ruler Engineer 12" Lot of 6