118 photos
Just think how long it took to hand draw all the technical components to each governor.


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John Herschel created the blueprint process in 1842.
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GLOB MILLS BLUEPRINT, CIRCA 1899.
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More donated vintage blueprints of hydro turbines.
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Prime Mover Control blueprint drawing history.
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Prime Mover Control blueprint drawing history.
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Historical notes on the Woodward compensating type water wheel governor.
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PMC blueprint history.
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Blueprint drawing history saved from the trash.
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WOODWARD GATE SHAFT OIL PRESSURE GOVERNOR HISTORY.
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WOODWARD GATE SHAFT OIL PRESSURE GOVERNOR HISTORY.
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Woodward Oil Pressure Relay Valve Water Wheel Governor history.
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ELMER WOODWARD'S NEW TYPE OF OIL PRESSURE WATER WHEEL GOVERNOR '' GATESHAFT'' TYPE.
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Blueprint drawing history saved from the trash.
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Prime Mover Control blueprint drawing history.
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Blueprint drawing history saved from the trash.