Westinghouse AC Voltmeter
Автор: Brent Wegher
Загружено: 2025-12-06
Просмотров: 13
Описание:
Glass cover was removed for cleaning. General size 8 inch square. The moving needle is about 3 inches long. There is a mark on the face 'TBS' which stands for taut band suspension. It is also marked Type KA-261.
This is a heavy industrial class meter of high quality. Would have been used in places where very reliable and accurate measure of electrical voltage.
I believe this meter also has engineering design that permits reliability in adverse conditions, such as vibration, temperature, humidity, etc.
Tested for accuracy using a modern digital meter on AC volts setting to determine basic accuracy at various voltages. Line voltage at this time is about 122 volts. Reduced voltages are obtained with a variable transformer called a Variac.
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