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 308
Fig. 217—The central distributor for the three-circuit controller in connection at any given time and can send his signalsaccordingly. The colored-light signal device is admirably adaptedfor use with models where the control need not extendmore chan a few hundred yards at the most. 306 Model…
Machinery
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