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keuffel esser planimeter 1918:
$118.00
The product is a Keuffel Esser planimeter manufactured in 1918. Planimeters are mechanical devices used for measuring the area of irregular shapes on a flat surface. This particular planimeter was made by the American company Keuffel & Esser, which was known for producing high-quality drafting and surveying instruments. As it was manufactured in 1918, it falls under the category of antiques and science & medicine (pre-1930) and is a valuable piece of engineering history.
