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Aviation History
1929
1929 - 0640.PDF
FLIGHT, MARCH 28, 1929 275 FIRTH SPECIAL 'TWERE is a Firth Steel for every aeronautical purpose. In addition to the honour of supplying Firth Steels for the various components of the Napier engine in the Supermarine S.5 which won the Schneider Trophy in 1927, we have also pride in the knowledge that the four Supermarine Napier Southampton flying boats which journeyed to Australia last year were even more completely equipped with Firth Special Alloy Steel engine components and flying-boat details. We are proud in the knowledge that, in putting our best into the Special Alloy Steels used in the construction of machines which achieve such results, we are helping to further the prestige of Great Britain and her manufactures. There is a Firth Steel for every aero- nautical purpose, and ample stocks, conforming to Air Board Specifications S.2, S.3, S.8, etc., and B.E.S.A. 5005/301, 302, 501, etc., are available for im- , mediate delivery. THOS. FIRTH & SONS, LTD., SHEFFIELD. Kindly mention "Flight" when corresponding with advertisers xviii
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