Vintage Bruning 2126P Triangular Engineer Scale Ruler 12” Drafting Tool

CHARVOZ 30-1516 Vintage Flat Engineer's Scale Japan 6" Ruler

Vintage Post 7301D Boxwood Triangular Scale Ruler 12 Inch Drafting Tool Antique

Mechanical Architect's vintage Scale Triangle Drafting Ruler WOODEN West Germany

VTG TAMAYA TOKYO Engineering Drawing Triangular Scale Ruler Made in Japan

Vintage DIETZGEN Architects' Scale/Ruler #31626

Vintage Pickett 234-A Triangle Engineers Scale Ruler and hard case - Japan

Vintage Nestler 6” Drafting, Architect, Engineering Ruler Scale; Germany; 0912