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Vintage Keuffel and Esser Slide Rule 4092-3S with Leather Case:
$22.95
The Vintage Keuffel and Esser Slide Rule 4092-3S is a collectible engineering tool made in the United States. This slide rule, along with its leather case, is a piece of history in the field of science and medicine from the 1930s. With its precise calculations and durable design, it serves as a valuable tool for calculation and problem-solving, making it a must-have for collectors and enthusiasts of vintage engineering tools.
From A Doctors Estate
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