USS Henley (DD-39)- Marine Reduction Gear- Sectional Assembly - NARA - 75842112.jpg
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USS Henley (DD 39) Marine Reduction Gear Sectional Assembly NARA 75842112, USS Henley (DD-39), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Henley (DD-39): Marine Reduction Gear: Sectional Assembly
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reduction gear high gear sectional reduction reducible reduce decrease diminution shrinkage reduced