Slide Rule 4081-3 Keuffel & Esser Vtg Collectible

Slide Rule 4081-3 Keuffel & Esser Vintage Collectible 1947 Keuffel & Esser KE 4081-3 Log Log Duplex Slide Rule W/Case Measures 12 1/2" long Includes Leather Case Core Material - Ivorite Slider is still functional, but both sides of the sliding piece are cracked. Cosmetic condition of the slider is poor. The leather case is in very good vintage condition and has a name on the inside with pen. Good for parts or restoration.