Type B prepayment, early version (1904 to 1906) Up
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This version of the Type B prepayment meter has much in common with the Type B singlephase meter, such as tailed pointers, screws for the covers, and the meter is labelled 'watt meter'. The coin slot is a simple chute with the opening out of the way of the incoming line wires. On both versions, the large dial on this meter shows the number of quarters to the customer's credit. The service was connected and disconnected by means of a solenoid that was operated by a differential gear on the meter register. Type B Prepayment, old style
Westinghouse Handbook on Watthour Meters