Author: Faber, A.W.
Title: Instructions for the Use of A.W. Faber "Castell" Precision Calculating Rule. Instructions.
Description: A.W. Faber 1925 1st edition. Printed wraps. saddle stapled 52pp with folding diagram at rear. Small section excised from top right of front wrap, would have name there as address line remains below. Some minor annotations. A sound clean copy,

Keywords: slide rule