Sector pattern switchboard wattmeter. Made

Sector pattern switchboard wattmeter. Made
3 3 c m
40cm
actual image size: 32cm x 25cm

Description

Sector pattern switchboard wattmeter. Made by Metropolitan Vickers. The wattmeter measures the power disipated in an electrical circuit. The need to measure power rose with the growth of the electricity supply network in the late 19th century.

Image Details

Image Ref.
 
10207915

© Science Museum / Science & Society Picture Library

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