#4003 • Slide Rules, Cases, and Drafting Instruments

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

High bid $14.00

Status: Sold

Collection of slide rules and drafting instruments includes examples stamped by Keuffel & Esser Co. (Polyphase and Polyphase Duplex), Pickett, Sterling, Lawrence Slide Rule Co., and Méthode Houdart. Fabricated from wood, metal, and plastic, the group includes fitted leather and paperboard cases alongside a wooden taper jig with brass hardware.