USS Henley (DD-39)- 4" Bronze Triplex Boiler Safety Valve - NARA - 75842056.jpg
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USS Henley (DD 39) 4" Bronze Triplex Boiler Safety Valve NARA 75842056, 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): 4" Bronze Triplex Boiler Safety Valve
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ヘンリー
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safety valve