Handicraft for handy boys; : practical plans for work and play with many ideas for earning money, (1911)
Hall, A. Neely (Albert Neely), b. 1883, Hall, Norman P., ill · Boston, : Lothrop, Lee & Shepard · leaf 284
n should be cut from thebattery carbons, how their ends should be tapered toa sharp edge with a file, and how the brass, copper,or tin strips should be cut and bent. Cut the carbon 234 HANDICRAFT FOR HANDY BOYS pieces ij inches high and the brass pieces 2^ incheslong by the width of the carbons.… … Fig. 307. Fig. 308.Fig. 309. 5ECT10(si Fig. 309. A Home-made Microphone Detector. (See Fig. 326.)How to prepare the Carbon and Brass Pieces.■ Section showing how to fasten the Pieces Together. and make the edge between the tips lower than thecarbon tops (see Fig. 309), as the needle must reston the…
Woodwork · Toys · Amusements
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