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Ref: 1316


volt box with plugs

 
Measuring instrument of electromotive forces : volt box for Wheatstone bridge out of box Jules Carpentier - ?J.CARPENTIER - Engineer Constructeur in Paris? - circa 1920/30
 
A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component. Its operation is similar to the original potentiometer. It was invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843. One of the Wheatstone bridge's initial uses was for the purpose of soils analysis and comparison.

Lenght 30.5 cm, width 18.5 cm, Height 11.5 cm


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