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MARC pre-1925 SGDG Paris celluloid Guedon pocket slide rule, Westinghouse elec.
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MARC pre-1925 SGDG Paris celluloid Guedon pocket slide rule, Westinghouse elec.

Starting price (see what it sold for on eBay ↗) $24.99 as of Jul 17, 2026
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Ships from ZIP 913**
soundthinking 5,597 ratings · 100.00% positive
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Description

From the seller
MARC Thin Film Cursor Guedon 5" celluloid slide rule (no UNIS logo, indicating pre-1925) with Westinghouse Electric logo on back. Rule is in excellent condition.

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