The first meter is an old Sangamo S 29 form 1 in service rated at 40 Ampères in use as a check meter at home on the hot water circuit.
meter constant 375 rev / kWh.
The second meter is a two rate Sangamo S309.2 meter measuring house load over two tariffs.
The third meter is a modified Sangamo S200.16 with pulse output ( S200.17) which provides 4 Wh pulses to my landis & Gyr summator meter.
The fourth meter is Sangamo S 29 form 11 which meters the TV circuit.
I only installed this meter about one hour before taking the video.

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