- The SI type Governor upgraded and improved to become the PG Governor.
- Woodward Service... At the Heart of the System Since 1870.
- Circa 1953.
- The Woodward SI type Governor was upgraded to become the PG Governor in the 1950's.
- A schematic diagram of the PG governor system.
- Documenting the evolution of the Woodward governor.
- Elmer Woodward's size F compensating type turbine water wheel governor on display at the Midway Village Museum in Rockford, Illinois.
- Amos Woodward was an obsessive tinkerer and inventor...
- WOODWARD SERVICE SINCE 1870.
- 6
- 5
- Page 3.
- Documenting the evolution of the Woodward governor through patents.
- A quote from Elmer Woodward.
- Elmer Woodward's size F compensating type turbine water wheel governor on display at the Midway Village Museum in Rockford, Illinois.