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RARE Antique Early 1900's Keuffel & Esser Co. Polyphase Slide Rule With Original RARE Antique Early 1900's Keuffel & Esser Co. Polyphase Slide Rule With Original

RARE Antique Early 1900's Keuffel & Esser Co. Polyphase Slide Rule With Original

$171.00 $285.00 -40%
03:58:05
Limited Time Offer
Estimated delivery dates: Nov 09 2025 – Nov 10 2025
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Fast shipping 2-3 days
Quality guarantee 1-year warranty

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 item

Case shows signs of wear and tear; edges are frayed and color is fading.

Features:
• Made in USA

Excellent antique condition

Product Information

Category Vintage & collectibles > Antique > 100 years or older
Size N/A
Brand Rare
Condition Good