- Woodward type TG-13 control schematic with a transducer(no flyweights anymore).
- A 1990's schematic of a Woodward universal governor(UG) first made in the 1940's.
- A vintage drawing of a Woodward hydraulic water wheel governor with off set standard Before 1920
- Close up of a Lombard governor conversion drawing.
- Sectional views from a 1937 drawing of a Woodward water wheel governor.