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Aviation History
1946
1946 - 1296.PDF
iv. Advertisements FLIGHT JULY 4TH, 1946 The INSULATOR of the PLUG is made ofSINTOX the world's hardest ceramic (of the same hardness as sapphire). Nothing but diamond is Harder, and it will cut glass. This perfect insulator is made solely in the Lodge plug factories. Pink in colour, it possesses the highest insulating properties, is a most efficient conductor of heat,, and is of astonishing mechanical strength. No other make of plug in the world enjoys the unique advantages of "SIMTOX" insulation, which is exclusive to LOD
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