Antique AW Faber Improved Calculating Rule Slide Rule With Case And Instructions

Vintage A.W. Faber “Castell” Slide Rule Model 360 PAT. No 206428 made in Bavaria

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

Vintage Allbrit Planimeter 35256 COMPLETE circa 1960 and slide rule Sun Hemmi

Antique AW Faber Castell 379 Pocket Slide Rule With Case

Rare vintage Stanley Stay Rule (circular slide rule - GPO / War Department)

Vintage Faber Castell 4/87 Rietz 57 cm 23″ slide rule 1950 Germany Big Size

Slide Rule Siemens