Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional mechanic .. (1919)
Yates, Raymond F. (Raymond Francis), 1895- ed · New York, The Norman W. Henley Pub. Co. · leaf 316
the other the instant thecurrent is applied and it will stay in that position untilcurrent is sent through the other magnet. A Model Submarine With Radio Control 313 The superstructure of the model is so designed as topermit of ready access to the machinery within throughthe openings which are… … Fig. 222—The relay switch assembled elevation in section. Note that the superstructure is builtup of two thicknesses of %-inch material and one of%-inch stock. The latter is secured after the formerare worked do\Mi to finished shape. In this thin pieceof lumber are placed the brass machine screws…
Machinery
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