on the engraving, and fasten to the aper- The engravings represent an electric telephone in the inches, and while the spool is being wound, great care tured block a bottom piece, C, by means of glue or simplest form. This instrument may be made by the should be taken not to break this projecting… … circular aperture of the dia- TELEPH0NE-PEB8PECTIVE VIEW. Fig. 1-SIMPLE One leg of the magnet is SIMPLE TELEPHONE-SECTIONAL VIEW. Fig. 2. phragm cell, it will form a broken off, as shown. To the diaphragm cell, A, make an aperture in which to magnetic contact with the end of the pole piece, G. the…
Feet · Water · Wbicb · Diaphragm · Witb · Scientific American · Tbis · Emin pasha · Captain forbes · Double cyanide · Water works · Tbe scientific · Thin tin · Carbonic acid · Fine wire · Bell crank
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