<i>Title:</i> New process expected to revolutionize map making. Washington, D.C., March 21. A new machine just designed and perfected by John Braund, Cartographer for the U.S. Coast and Geodetic Survey, by which relief maps can be made showing all the details of topography in a form true to nature, is expected to revolutionize map making. Instead of compressed paper or cardboard, Braund uses a thin metal on which he prints the map, and, then hammers out the topography with a specially-designed electric hammer. Maps made by this process can be quickly understood and accurately read by even the untrained map reader. Braund said the new machine would be of untold value to armies in field in war time. 3-21-39
<i>Abstract/medium:</i> 1 negative : glass ; 4 x 5 in. or smaller
Harris &amp; Ewing, photographer
<p>Library of Congress
</p>
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