Aristo Compass Circle Drawing Instrument With Box Fully Working

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

Vintage Sun Hemmi No. P281 Japan Slide Rule With Case Good Condition

Antique ebony and brass parallel rule for navigation/drafting

Vintage Castell Precision Slide Rule Novo - Duplex No 2/83, 62/82 #2

Rare Antique Albert Nestler 23AR Slide Rule In Case

Rare, Inglis Engineers Slide-Rule & Ready Reckoner, Antique, Poor Cond'n (A1080)

Faber Castell Ruler No 57/87 Vintage School Slide Rule for Draughing Drawing