Probably almost as old. I had a new one put in when I got storage heating as
part of the deal, it has a disc and a couple of winking leds I'm told.
Brian

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The Sofa of Brian Gaff...

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"newshound" wrote in message
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Prompted by another thread, I still have a traditional electromechanical
one with the spinning disk.

It has a sticker saying "Tested 8/88"

Made by English Electric, which (according to Wikipedia) went defunct in
September 1968.

It has been seen regularly by Meter Readers.