Lot · Slide Rules
Keuffel & Esser 4081-3 Slide Ruler w/ Leather Case K&E Patented 1947
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Tue · Jul 7, 2026
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Condition
Used
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Used
Refurbished
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ZIP 060**
ctladyluck
180 ratings · 100.00% positive
Description
From the sellerThe Keuffel & Esser 4081-3 Slide Ruler is a vintage engineering tool patented in 1947, manufactured in the United States. This high-quality slide ruler is a collectible item that is sought after by enthusiasts of science, math, and engineering. The included leather case adds to its appeal as a durable and stylish accessory for anyone interested in mathematical tools and history. Excellent condition.
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