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Got dials?

One of the last electric meter models produced by Sangamo before someone got the idea of adding an LCD to the register module.

 

The Time indicator is a pair of 7-segment LED displays that sequentially flash the time / date when prompted by activating a hidden switch. The backup battery and removable EPROM card are visible in the front as well.

 

These were introduced in the early 1980s when electric utilities began introducing 'time of use' rates as one way to encourage energy conservation during periods of peak usage.

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Uploaded on December 4, 2016
Taken on November 3, 2016