This small brass instrument, 2¾ inches diameter, was manufactured by Short & Mason in London and sold by the Taylor Instrument Companies in the United States. The U.S. Weather Bureau transferred it to the Smithsonian in 1954.
The silvered face is marked “Compensated” and “No 1016” and “U.S. WEATHER BUREAU” and “SM / LONDON” and “Tycos,” The pressure scale around the circumference of the face reads from 28 to 31 inches of mercury, in .02 inches. A sticker on the back of the case reads “DEPARTMENT OF AGRICULTURE / 9369 WBZ.”
The Taylor Instrument Companies began operating, as such, 1904, and introduced the Tycos trade mark in 1908.
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