Siemens and Halske watt-hour meter.
4 0 c m
 
39cm
actual image size: 31cm x 32cm

Siemens and Halske watt-hour meter.

© Science Museum / Science & Society Picture Library

Description

Direct current indicating and integrating watt-hour meter, 300 amp capacity, made by Siemens and Halske.
 

Image Ref.

10207724
 

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