<div class="description">
<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 City, N.Y.  Soaking test in which the bulbs are placed in the boiling water for a long period to determine definitely whether leaks are present.  After the pointers on the test dial have reached their highest points, a record is taken on the position of these pointers, and after a long period of continuous internal pressure, the instruments are again read, and those which show a falling off of the needle are discarded as probably showing leaks.  The instruments which test out satisfactorily under the soaking test, are returned to the assembly bench to receive cases, dials and pointers after which they are carefully calibrated.</li></ul>
Photographer: Boyce Moto-Meter Plant</div>
<div class="fn value">
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>