Vintage Keuffel & Esser 4088-3s Slide Rule+leather Case~pre 1939~original Owner For Sale
This is a vintage Keuffel & Esser 10" polyphase duplex slide rule with all glass cursor. It also has the original leather case with the model number 4088-3S embossed on the tab. It belonged to my grandfather (whose name is printed on the back of the case) and is in very good condition. He took very good care of his things, and this has been in the family for years. I believe this dates between 1922-1939.All sales are final, so please email with any questions. Payment is expected to be made WITHIN 5 DAYS from end of sale. Please use shipping calculator to determine rates.