USS Preston (DD-19)- Details for Oling and Indicator Gear for 8" x 8" Main Circ. Pump Engine - NARA - 117877613.jpg
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USS Preston (DD 19) Details for Oling and Indicator Gear for 8" x 8" Main Circ. Pump Engine NARA 117877613, USS Preston (DD-19), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Preston (DD-19): Details for Oling and Indicator Gear for 8" x 8" Main Circ. Pump Engine
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high gear leading indicator predictor