- July 9, 2026You are purchasing an Antique Keuffel & Esser Co Slide Ruler with Original Leather Case for.
- July 9, 2026
- July 9, 2026This is a wonderful antique Keuffel & Esser Three Compass Set in a Leather Pin Latch Case. It is in…
- July 9, 2026This antique Keuffel & Esser 4088-3 slide rule, patented on June 5, 1900 and December 22, 1908, comes in its…
- July 9, 2026Vintage Antique K & E Keuffel & Esser CO. N.Y. 4041 Mannheim Slide Rule w/ Case
- July 9, 2026Vintage KEUFFEL & ESSER N996 Mechanical Drafting Tool Set-ANVIL made in Germany Brand: Keuffel & EsserModel: N996Era: 60's best guessNotable:…
- July 9, 2026Original Patent June 5, 1900 Keuffel & Esser Slide Rule w/Leather Holder WOW! Here is an Original Patent June 5,…
- July 9, 2026Antique Keuffel & Esser Beginners Slide Rule 4058 Patent 1916 Students With Case Case is probably not original. Does not…
- July 9, 2026Marked 1900 & 1915 patents. Age - ca 1920's.
- July 9, 2026
- July 9, 2026The product is a superb antique aneroid barometer made by Keuffel & Esser around the turn of the 20th century.…
- July 9, 2026This is a vintage military compass made in the 1930s by Keuffel & Esser. It was designed as a navigation…
