This lift pump was used by physics students at Columbia College (now University) in New York City. It is made of brass and glass, sits on a square mahogany base, has no apparent inscriptions, and does not resemble pumps offered by major makers and dealers. It may have been made by William Grunow (1830-1817), a German immigrant who moved to New York City in 1873 and was soon advertising as “scientific instrument maker” at Columbia College.
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