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These little three pound Woodward PM series governors controlled the fuel in the Mack truck engines in the 1950's.

Woodward type PM governor _reference manual 35000__.jpg Elmer E. Woodward's propeller engine governor patent 2204640ThumbnailsOldwoodward.com blueprint history.Elmer E. Woodward's propeller engine governor patent 2204640ThumbnailsOldwoodward.com blueprint history.Elmer E. Woodward's propeller engine governor patent 2204640ThumbnailsOldwoodward.com blueprint history.Elmer E. Woodward's propeller engine governor patent 2204640ThumbnailsOldwoodward.com blueprint history.

An example of this PM type small governor is now in the oldwoodward.com collection.

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