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 397
nown as secondarystandards and are usedfor checking working in-struments. For direct-current service these gen-erally consist of a labor-atory type of DArsonvalvoltmeter and also milli-voltmeter, scaled to readin amperes when usedwith suitable currentshunts. These instru-ments (see Figs. 64 and 65)… … Fig. 64. Weston Laboratory Standard Voltmeter
Electrical engineering
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