6" Brass Drafting Tool Proportional Divider Compass Scientific Instrument

SECTOR OR PROPORTIONAL COMPASS. SCIENTIFIC DRAWING INSTRUMENT. VERY GOOD.

Solid Brass Divider Drafting Proportional Tool 6" Navigational Compass

Antique Brass Drafting Tool Proportional Divider Compass Scientific Instrument

Vintage PROPORTIONAL DIVIDERS BRASS & STEEL W & D Ltd. BOXED 1900s Original Box

Brass Proportional Divider 9 Inches Engineer Drafting Tool Scientific

Antique Brass Drafting Tool Proportional Divider Compass Scientific Instrument

Vintage Drafting Instruments Set in Case Drawing Compass Divider Tools