The Boyce MotoMeter was patented in 1912, and was used in automobiles to show the temperature of the radiator. From then through the late 1920s, the Boyce MotoMeter Company in Long Island City, New York, founded in 1912 by the German immigrant Hermann Schlaich, manufactured different models which varied in size and design.
This unit is a Universal Model and indicates it is covered with patents from 1913-1918. Not entirely sure but it appears that it is brass and will probably polish up nicely.
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