Dietzgen Polymath Multiplex Slide Rule 1744

Description

This beautiful 10-inch mahogany-core slide rule is in near-perfect condition. If it was ever actually used, it's hard to tell it from inspecting it. The leather case is also nearly pristine and unmarked, with one tiny scratch on the back side (see photo). The slide rule comes with its original warranty (torn at corner) and an instruction manual (well-folded) in one-half of the original cardboard box. Inside the leather case is a handy-dandy plastic cheat sheet/straight edge loaded with conversion tables and geometric formulae. Made in U.S.A. From my collection to yours.