Brown Instrument Company was a U.S. firm known for high-quality instruments (such as pyrometers, thermometers, hygrometers, tachometers, pressure gauges, flow meters, and electrical meters) and industrial controls.
The company was founded in 1857 in Philadelphia by Edward Brown, inventor of the first pyrometer of American design.[1] In 1934, the firm became a division of Honeywell.
The company was a large employer in North Philadelphia during most of the 20th century. The large brick factory building across Windrim Avenue from Wayne Junction, currently Extra Space Storage, was formerly one of the principal Brown Instrument Company buildings. The Wayne Avenue façade still has "Brown Instrument Co" relieved into the concrete. A catalog of 1921[2] mentions the laboratories here. A search on Google Book Search for "Brown Instrument" "Wayne Ave" shows multiple addresses for the company on the 4400 and 4500 blocks of Wayne Ave, which straddle Wayne Junction. Another search result from 1915 mentions 311 Walnut St. Across the regional rail tracks from Fern Rock Transportation Center there is another old factory building topped by a sign marked "Honeywell – Brown Instrument Division".
The firm later moved to Fort Washington, Pennsylvania. Honeywell's automation and control businesses still have a campus there, although the Brown Instrument name has been retired.