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Boyce Motometer for Ford Chrome Winged Thermostat Reader 1920's Roadster

Boyce MotoMeter for a Ford
marked at the top "Boyce Motometer"
The glass appears to original and the insert with the Ford logo is in very good condition.
The underside of the radiator cap is marked Greenland Glendale Calif.

Size: 4 1/2 tall x 8 inches
Condition: Very fine with some pitting under the wing. please see the images for details

"Boyce MotoMeter was patented in 1912, and was used in automobiles to read 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 a variety of different models which varied in size and design.
The non-pressurized Thermosiphon cooling systems that were widely used until the 1920s led to a low boiling point. The Boyce MotoMeter was a simple device. Although it not always warned about engine overheating in time to prevent damage, it offered for the first time information about the engine temperature from the driver's seat. Motometers were at first aftermarket devices."

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Detail photos Click to enlarge

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