The standard electrical dictionary; a popular dictionary of words, terms, and phrases, used in the practice of electrical engineering (1897)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, H. W. Henley & co. · leaf 629
set in flush wTith the(See App. Wall Box.) Switch, Indicating. A snap switchshowing if its circuit is made or broken by adial bearing the words ON and41 OFF. Switch, Intermediate. A switch foran intermediate station on a telephone lineso that the intermediate station may calleither terminal… … Fig. ;Flush Switch. wall or wood-work.
Electricity
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