Handicraft for handy boys; practical plans for work and play, with many ideas for earning money (1911)
Hall, A. Neely (Albert Neely), b. 1883- · Boston, Lothrop, Lee & Shepard Co · leaf 297
To-Battery^ Fig. 327. —An Induction-coilor Spark-coil. Fig. 328. — How to make a Spark-gapon Coil Box with Battery Zincs. wire wound upon a core of soft, bare-iron wires; thisfirst winding is called the primary. Over this is wound 246 HANDICRAFT FOR HANDY BOYS a great many turns, in many layers, of…
Woodwork · Toys · Amusements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
