I.C.S. reference library : a series of textbooks prepared for the students of the International Correspondence Schools and containing in permanent form the instruction papers examination questions, and keys used in their various courses (1904)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 426
bove,when indicating 150volts, the current, byOhms law, is only 150^ 19,000 = .0079 am-pere. All voltmetersare provided with atleast two terminals, orbinding posts, such as/and /, Fig. 4G. Con-nections are made bytwo separate conductors, called voltmeter leads, from thesebinding posts to two points… … Fig. 46. 48 ELEMENTS OF §8 graduated scale situated directly under the main scale, onedivision of the upper scale having the value of two lowerdivisions. The majority of voltmeters are also providedwith a contact button b, which when pressed closes thecircuit and allows the index needle to be…
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