Waller Gunnery Trainer
The Waller Gunnery Trainer was a simulator for training World War II aerial gunners using multiple film projectors. Its inventor, Fred Waller, later invented the Cinerama film format.
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Wikipedia
The Waller Gunnery Trainer was a simulator for training World War II aerial gunners using multiple film projectors. Its inventor, Fred Waller, later invented the Cinerama film format.