Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 225
the pointer so thatit is directly over its reflection in themirror, errors in reading the scaledivisions due to parallax * are thusavoided. In Weston instruments thepost marked -\- is the one by whichthe current should enter the instru-ment so that the coil will be deflectedin the right… … Fig. 197.—The Magnetic Cir-cuit of the WestonInstruments. alloy, and contained either in the in-strument, in a separate portable case,or on an external block. Fig. 199, as inthe switchboard type of instruments.The lead wires to the shunt, the instru-ment and the shunt, are all numberedto…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-237-104.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-93-12.webp)
