Pair of Keuffel & Esser Surveying Tools
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Description
Pair of mid-20th century surveying tools by Keuffel & Esser Co. (drafting instrument and supplies company founded in 1867 by two German immigrants); one WW2 era Cooke Radio Slide Rule, model #4139, designed in mid-1930’s by Nelson M. Cooke of the Navy’s Radio Materiel School (first electronics training facility of America’s military organizations), measures 21.5” x 1.75” x 2”, mounted on iron stands, does not include carrying case; one Keuffel & Esser vintage Abney Level designed for measuring slope, circa 1950s, includes dark blue leather carrying case inscribed K&E, level measures 6.25” x 2.5” inside a leather carrying case measuring 7.5” x 3.5”.
Condition
Both in generally good aesthetic condition, slide rule plastic center and slides are fully functional with some various light stains and surface scratches consistent with age; abney level functionality unknown
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Pair of Keuffel & Esser Surveying Tools
Estimate $50 - $100
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Item located in Pittsburgh, PA, usSee Policy for Shipping
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