Success: You have added RARE Antique Keuffel & Esser Co. Polyphase Slide Rule - Early 1900s to your shopping cart!
This vintage Keuffel & Esser Co. Polyphase Slide Rule is a collector's item, complete with its original case. Ideal for antique enthusiasts and engineers.More information: https://www.mccoys-kecatalogs.com/KECollection/4053/ke4053_1.htm• Keuffel & Esser Co. brand• Polyphase Slide Rule model• Comes with original case• Wooden construction with measurement details• Collector's itemCase shows signs of wear and tear; edges are frayed and color is fading.Features: • Made in USAExcellent antique condition
| Category | Vintage & collectibles > Antique > 100 years or older |
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