From General Motors Annual Report: Battery of engine dynamic balancing machines specially developed by GM Research Laboratories Division for Chevrolet-Flint V-8 engine plant. Engines balanced by these machines are so vibration-free that a coin will stand erect on them at 2,500 RPM

Digital Commonwealth — Boston Public Library

From General Motors Annual Report: Battery of engine dynamic balancing machines specially developed by GM Research Laboratories Division for Chevrolet-Flint V-8 engine plant. Engines balanced by these machines are so vibration-free that a coin will stand erect on them at 2,500 RPM

[ca. March 1955]

RightsCC0 — Public Domain

CollectionDigital Commonwealth — Boston Public Library

[Information from item housing] Machinery ... Large + Small

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