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Aviation History
1945
1945 - 1907.PDF
i8 Advertisements. FLIGHT SEPTEMBER 27TH, 1945 BOW WE MADE RUBIES ... FOR BRITAIN'S TIGHTER PLANES Rubies ? For what ? For the sparking-plug insulator . . . where they would do the most good. Aircraft experience proved that 'natural' materials like mica and porcelain could not stand up to modern high-efficiency engines. A new material had to be made to fit the job. It was devised by K.L.G. from chemically pure aluminium oxide, electrically fused into a mass of interlocking corundum crystals ... each crystal a tiny jewel, second only to a diamond in hardness and capable of cutting glass. A slight impurity to add colour would have given us rubies . . . but impurities were barred, CORUNDITE, the new insulator, won highest battle honours in the Battle of Britain. Before long it will be a feature of every K.L.G. car-type sparking plug. Ask for K.L.G. CORUNDITE in your post-war car. KLG CORUNDITE K. L.G.SPARKINGPLUGS LIMITED, PUTNEY VALE, LONDON, S. W. 5
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