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- The SI type Governor upgraded and improved to become the PG Governor.
- A schematic diagram of the PG governor system.
- 1
- Page 3.
- From the PMC advertisement collection.
- Documenting the evolution of the Woodward governor through patents.
- Circa 1953.
- From the 1950's Woodward history book.
- The Woodward SI type Governor was upgraded to become the PG Governor in the 1950's.
- Amos Woodward was an obsessive tinkerer and inventor...
- A schematic diagram of the PG governor system.
- WOODWARD SERVICE SINCE 1870.
- 19
- Circa 1958.
- Documenting the evolution of the Woodward governor through advertisements.