Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 236
Fig. 73. Wheatstone Bridge Diagram … z= A Fig. 74. Portable WheatstoneBridge Courtesy of Roller-Smith Company Portable Bridge. A very con-venient form of this apparatus iswhat is known as the portable bridge,Fig. 74. This consists of a plug re-sistance box of the decade type, cor-responding to C of Fig. 73; the ratiocoils…
Electrical engineering
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