This advertisement placed by Greenfield Tap and Die Corporation (GTD) ran in Aero Digest magazine during World War II (1939-1945.) GTD was the world’s largest maker of taps, dies, and gages. The Army/Navy awarded the company with several “E” flags and the employees received “E” pins for exceptional performance in manufacturing. GTD ran three shifts, working around the clock seven days a week to produce these measuring devices that insured an accurate fit for all parts produced anywhere in the country.
Greenfield Tap and Die Corporation. [To You- Who Helped Us Win the Army-Navy “E.] Aero Digest, 1942. Pocumtuck Valley Memorial Association, American Centuries. https://americancenturies.org/collection/l06-032/. Accessed on October 16, 2024.
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