Alvin 244B Drafting Engineer Scale 12” Triangular Ruler W/Case Bamboo Japan Used

CHARVOZ Engineering Drafting Ruler 30-1506 Japan With Sleeve

Vintage Triangular Engineering Drafting Scale Ruler West Germany Plastic

Charvoz Engineer Drafting Triangular Ruler 30-1203 Japan Case Included Vintage

Charvoz 30-1213 x2 Triangle Drafting Rulers, Excellent Condition

2 Vintage Wooden And Plastic 3 Sided Drafting Rulers

Lot of 5 Engineer Architect Drafting Triangular Rulers - Plastic, Metal & Wood

Architectural Scale Ruler 12” Plastic Triangular Drafting Tool for Engineers