Ammeter
Maker and role
Bell Telephone Manufacturing Company, Manufacturer
Production date
Circa 1930s
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Object detail
Accession number
1966.371
Production period
Description
Ammeter.
Circular ammeter in metal casing with raised base. At the top of the ammeter, there is a glass window beneath which a scale with measurements in increments of 25 on either side of a 0 going from 0-75 printed. There is a metal indicator arrow. "BTM / A / AVEC-SHUNT" is printed. On the outer rim of the casing "CHARGE / DISCHARGE" is engraved. On the underside of the ammeter, there is a plate with a + and - symbol engraved and painted white on it.
Circular ammeter in metal casing with raised base. At the top of the ammeter, there is a glass window beneath which a scale with measurements in increments of 25 on either side of a 0 going from 0-75 printed. There is a metal indicator arrow. "BTM / A / AVEC-SHUNT" is printed. On the outer rim of the casing "CHARGE / DISCHARGE" is engraved. On the underside of the ammeter, there is a plate with a + and - symbol engraved and painted white on it.
Marks
BTM / A / AVEC-SHUNT Printed
CHARGE / DISCHARGE Engraved
CHARGE / DISCHARGE Engraved
Media/Materials
Credit Line
Bell Telephone Manufacturing Company. Circa 1930s. Ammeter, 1966.371. The Museum of Transport and Technology (MOTAT).
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