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Aviation History
1938
1938 - 0685.PDF
T MARCH 17, 1938. ADVERTISEMENTS. FLIGHT. 3 High stresses "Material which is stressed to a high* degree must give consistently good physical properties combined with regularity of behaviour in forging heat treatment and machining. "DIAMET Inspected" electric steel is subject to particularly careful scrutiny throughout its manufacture, and in addition each cast is examined for cleanness by means of the Fox In- clusion Count method, which makes it possible to assess the degree of cleanness on a quantitative basis. The "DIAMET Inspection" system is applied to the steels used in the more vital parts of aircraft, aero engines, automobiles and other important machinery. Specify "DIAMET Inspected" Steels. THE UNITED rj COMPANIES LTD Rolls Royce Kestrel crankshaft, drop stamped by Smith-Clayton Forge Ltd., from "DIAMET Inspected" 3% nickel-chrome-molybdenum steel. SAMUEL FOX & CO. LIMITED Associated with The United Steel Companies Limited STOCKSBRIDGE NR. SHEFFIELD DI AM UT InspedeJ'Steel DISC INSPECTED*. METALLURCICALLY EXAMINED & TESTED MATERIAL HIGH FREQUENCY \ ELECTRIC STEEL DT.22 A
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