The proportional divider!
Prospek Proportional Divider - Drawing Tool
Derwent Scale Divider
Proportion Drawing
Drawing Compass, Vintage Set of Drawing Instruments / 10 X 4.3 / Engineering Science Equipment, Drawing Tools, Drafting Tools - New Zealand
Vintage Divider, German Original Richter Divider, Vintage Drafting
Proportional Divider Set of 5, Full Brass dividers with Executive Wooden Box. – 5MoonSun5
Alvin Drafting 6 Equal Spacing Divider #719A
Antique Divider Compas Nautical
6 Proportional Divider Brass Drafting Tool Scientific
Introducing our 12-inch Brass Drafting Tool Proportional Divider, the must-have tool for precision and accuracy in all your drafting and design
Humaira Nautical Brass Drafting Tool Proportional Divider 12 inch Scientific Instrument with Solid Leather Cover
Designing Without A Ruler – “By Hand & Eye” Explores Designing With Dividers.
10 Inches Proportional Scale Divider Drawing Tool Comptiable With Artists Adjustable Plastic
Drafting Scales