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Aviation History
1938
1938 - 1862.PDF
32 FLIGHT. ADVERTISEMENTS. JUNE 30, 1938. BtmOTCcontROL The G.A.L. Smoke Trail can be literally started at the touch of a switch, away in the control tower. It can be cut off in the same way. A dense, white plume of smoke is produced, unmistakable and reliable. The Smoke Trail works day and night without attention; and at night, moreover, it can be illuminated if you wish. It carries fuel for a week without replenishment; upkeep costs nil. Placed in a concrete pit and flush with the ground, the mechanism offers no obstruction to landing .aircraft, which can safely touch down even on the pit cover itself. We shall be glad to demonstrate the G.A.L Smoke Trail at any time. Write or 'phone Feltham 2604. General Aircraft Ltd., London Air Park, Feltham, Middx. 6.A SMOKE TRAIL RE-CIRCULATED ATMOSPHERE One of a pair o: Ovens supplied to AGEING OVEN for .i? ALUMINIUM ALLOYS Special heating and air distributing system ensuring evenness of temperature over all sections of the oven to within plus or minus 2£°C. Ovens designed for special purposes up to a maxi- mum of 4S0°C. Evenness of temperature guaranteed within limits down to plus or minus £°C. Also conveyor or batch type ovens for all drying processes, heat treatment, etc.
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