Many drive-in installations use a 3-wire system for sound and down lighting. ... more than one-fourth full of water and sufficient antifreeze, attached to the back of a jeep, tractor or truck, is required to roll down any normal snow fall in the rampanbsp;...
|Title||:||Motion-picture projection and theatre presentation manual|
|Author||:||J. Walter Bantau, Society of Motion Picture and Television Engineers|