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<ul><li><b>Scope and content:</b>  Original Caption: Manufacturing Boyce Moto-Meters, Distance type, for the government at the Boyce Moto-Meter Plant, Long Island, N.Y.  The appearance of an instrument dial undergoing these tests.  In the upper row, reading from left to right, first, the under pressure, and then the over-pressure test, and in the lower row, freezing, intermediate and boiling tests.  the baths for these tests are automatically maintained at any pre-determined temperature desired by the mechanism.</li></ul>
Photographer: Boyce Moto-Meter Plant</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>