antik.it/Antique-measuring-instruments/6724-Antique-anemometer/
1603970275Code 6724 Antique anemometerBrass anemometer with original leather case signed Keuffel & Esser Co New York, complete with two scales. Double brass base with a ball bearing inside to allow the anemometer to rotate in the direction of the wind. Excellent condition, fully functional. Instrument diameter 8 cm - 3.14 inches, thickness 3.5 cm 1-37 inches. Case cm 9.5x5 h 11 - inches 3.74x1.96 h 4.33.
The Keuffel & Esser Co. company was a manufacturer of tools for design founded in 1867 by WJD Keuffel and H. Esser; the company began by selling tools for drawing and design in New York and then start selling, in 1876, surveying tools. In 1889 the company moved into new plant in New Jersey and in the ten years later it began to market new surveying instruments based on the studies of John Paul, an Italian immigrant. At the same time it also started the production of sextants, in agreement with the U.S. Navy. In the '20s the company began to manufacture slide rules; during the Second World War it made fire tools for the U.S. government and it won three "Army-Navy E Award" for excellence in manufacturing.
An anemometer is an antique instrument to measure air flux and it is used to survey and measure speed of air masses. Anemometer with mobile propellers probably comes from windmills; this idea was used for example by Robert Hooke about from 1670, one of the most important scientist in XVII century for scientific revolution.
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Of course! The legislative decree n. 42/2004 stipulates that who sells works of art or historical and archaeological items has the obligation to deliver to the purchaser the documents attesting to the authenticity of the object, or at least to submit the documents relating to the probable attribution and origin. Antik Arte & Scienza provides an expertise (as warranty) that contains a description, period and assignment or the author, if known, of the item.
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Italy: delivering on the average in 24 h.
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Other countries: delivering on the average in 5 weekdays; custom duties charged to the buyer.
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Antique measuring instruments
Code 6724 Antique anemometer
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