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.
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Naval Air Experimental Station, and United States. Navy. “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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