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<ul><li><b>Scope and content:</b>  Original Caption: Manufacturing Army trucks at the Locomobile Co. Plant, Bridgeport, Conn.  Another view of locomobile on block test showing the dynamos that transform the engine power into electric current and the electrical instruments that measure the output.  The engines are then started and run under their own power and the electric motors are changed to function as dynamos to measure the power developed.</li></ul>
Photographer: Publishers Photo Service</div>
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Unknown author<span style="display: none;">Unknown author</span> or not provided</div>
<a href="https://en.wikipedia.org/wiki/U.S._National_Archives_and_Records_Administration" class="extiw" title="en:U.S. National Archives and Records Administration">U.S. National Archives and Records Administration</a>