"> Antique 505a Keuffel & Esser Mannheim Beginners no. 4058 slide rule
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Antique 505a Keuffel & Esser Mannheim Beginners no. 4058 slide rule
505a
$15.00
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Ruler has Keuffel & Esser Co. NY made in USA with 4058 on one end slide is missing. More pictures upon request.
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