Vintage Triangular Engineering Drafting Scale Ruler West Germany Plastic

Vintage Gramercy 530 Architect Triangular Scale Drafting Ruler West Germany

Fullerton 3725 Triangular Scale Ruler Made in Germany Architect Drafting

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

VTG—K & E 563790 Triangular Scale Ruler Clear Slide Case West Germany

Vintage USST’D Triangular Wooden Ruler West Germany Hardwood

Alvin 247P Metric Triangular Drafting Scale Ruler (30 cm / 11.81"). Germany