- July 9, 2026
- July 9, 2026The ruler has a crack in the clear plastic part (please look at photos). It does not affect the function…
- July 8, 2026This unique antique drafting table seeing out arm ledger shelf is a rare find for collectors and enthusiasts alike. With…
- July 7, 2026Antique Keuffel & Esser New York Compass in Mahogany Wood Box. In good antique condition. Some light scratches on the…
- July 2, 2026Keuffel & Esser Co. Appld For” – Original Box – Immaculate Early Variant Pre Model #. The rule’s construction and…
- June 29, 2026It includes portion of a Mount as can be seen in the photos. I do not know anything about this…
- June 29, 2026By William E. Breckenridge, A.M. Associate in Mathematics, Columbia University Published by Keuffel & Esser Co., New York and Hoboken,…
- June 27, 2026Very nice condition for its age. See all photos.
- June 27, 2026The next year he joined with Herman Esser (1845-1908) who was originally from Wuppertal-Elbertfeld. Wilhelm J. D. Keuffel died in…
- June 27, 2026This is a remarkable antique Keuffel & Esser (K&E) slide rule, complete with its original brown leather case. The slide…
- June 27, 2026Here is an ANTIQUE PRE 1930s KEUFFEL & ESSER Co N.Y SURVEYOR'S TRANSIT BRASS With Original WOODEN CASE. The front…
