- The engine gear end
- The head assembly
- The gear end
- The pilot valve and head components
- Hamilton Standard type 1P12-A governor
- The oil pump taken off the governor body
- Constand speed control type 1P12-A
- Hamilton Standard constand speed control
- The Hamilton Standard type 1P12 propeller engine governor manufactured by the Woodward Governor Company in 1953
- The Hamilton Standard type 1P12 propeller engine governor manufactured by the Woodward Governor Company in 1953
- View of the speeder spring and pilot valve parts
- A vintage governor type 1P12 taken apart
- Woodward bulletin 33016B.
- Hamilton Standard propeller governor patent name plate on the type 1P12-A control
- Woodward bulletin 33016B.