| Time Period Manufactured | Pre-1930 |
|---|
Check the listing for details. Vintage 1920s K & E Beginners Slide Rule 4058c Keuffel & Esser Wood USA EOC. Listed at 18.80 USD. Box is distressed. Ruler does not fit In the box. Purchased with the ruler, which is why I included in the listing. Ruler is in excellent condition. The Vintage 1920s K & E Beginners Slide Rule 4058c by Keuffel & Esser is a rare piece of engineering history from the pre-1930 era. Made of wood in the United States, this slide rule is a beginner's tool designed for mathematical calculations and drafting. With its unique design and historical significance, this antique piece would be a valuable addition to any collection or display related to science, medicine, and engineering from that time period.
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