#4001 • Slide Rules, Drafting Scales, Folding Ruler, and Cases

Part of October '26 Consignment (timed auction by The Swicegood Group)

High bid $22.00

Status: Sold

Collection of calculating and drafting instruments includes slide rules, a wooden scale ruler, a Stanley No. 124 Zig Zag folding ruler, leather slip cases, and two-piece storage boxes. Marked pieces include a Keuffel & Esser Co. No. 4059 Beginner's Slide Rule with box, a yellow Pickett & Eckel duplex slide rule, a Richardson Rule Works Direct Reading Slide Rule, a Gisholt Time Computer, and an A. W. Faber case.