Set of standard test specimen molds and dies used in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. This photograph was included in a 1949 Naval Air Experimental Station report on compounding rubber.
United States. Navy, and Naval Air Experimental Station. “Standard Test Specimen Molds,” circa 1949. Photographs from the Papers of J. Hartley Bowen, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/cf95jb48w.
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