<div class="description">
<p>Bibliography: p. 347-350
</p>
<br>Subjects: Optical instruments; Range-finding</div>
<div class="fn value">
<dl><dd>Gleichen, Alexander Wilhelm, b. 1862</dd>
<dd>Great Britain. Dept. of Scientific and Industrial Research</dd>
<dd>Emsley, H. H. (Harold Heaton)</dd>
<dd>Swaine, W</dd></dl></div>
Internet Archive identifier