Floyd Firestone with the original Supersonic Reflectoscope Type A in 1945. This was made by Sperry Products Inc. Hoboken, New Jersey.
From his publication " The Supersonic Reflectoscope, an Instrument for Inspecting the Interior of Solid Parts by Means of Sound Waves" in The Journal of the Acoustical Society of America -- January 1946.
An early Commercial model of the original "reflectoscope". Around the early 1950s
This was manufactured by Sperry at Danbury, Connecticut.
A later model of the Sperry Reflectoscope, circa.1958.
A page from an early Sperry bulletin/datasheet.
Page 2 from the same bulletin.
Images courtesy of UXR, Simi Valley, California, U.S.A.
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