Keuffel & Esser Polyphase N4053-3S Wooden 10" Slide Ruler Leather Case & Box

Description

Keuffel & Esser Polyphase N4053-3S Wooden 10" Slide Ruler Leather Case & Original Box. Has been sitting in storage for a while. Needs to air out a little or wiped down. Original box has tab with original sticker. Other side of box is open. Leather case works fine. Thanks.
Brand: Keuffel & Esser
Model: Polyphase N4053-3S