- A vintage governor manufacturing equipment project for the hydro-electric power plant Industry.
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- A New Water-Wheel Governor by the National Water-Wheel Governor Company.
- A new Water-Wheel Governor by the National Water-Wheel Governor Company.
- A typical governor installation on a horizontal turbine water wheel unit.
- A vintage machine shop manufacturing history project about the hydro-electric power plant Industry.
- A vintage machine shop manufacturing history project for the hydro-electric power plant Industry.
- A vintage machine shop manufacturing history project for the hydro-electric power plant Industry.
- A Vintage Machine Shop Manufacturing History Project.
- A vintage Water Wheel Governor Manufacturing History Project.
- A vintage Water Wheel Governor Manufacturing History Project.
- A vintage Water Wheel Governor Manufacturing History Project. Page 1.
- A Water Wheel Governor with the cover removed.
- Elmer Woodward's new horizontal compensating water wheel governor, circa 1903.
- JOHNSON HYDRAULIC VALVES.