Vols. 1-2 include a qSyntopical index to current electrical literatureq.1 designates a portion of a telephone- box, through an opening 2 in which the receiver-hook 3 extends. ... Connecting with the block 7 and extended down at the outer side of the box is a shifting rod 8, which has a loop portion 9, through whichanbsp;...
|Author||:||Fred B. De Land, John C. McMynn, Frederic Auten Combs Perrine, Carl E. Kammeyer|