Army & Navy: Gunner's Gimmick

Proud, precise Sperry Corp., manufacturer of gyroscopes and fantastically complex instruments for war and peace, had special reason for pride this week: Army authorities permitted it to release details and photographs of its Automatic Computing Sight—the magic gimmick which goes a long way toward explaining the phenomenal defensive strength of U.S. bombers against enemy fighter planes.

What the gimmick does is enable the gunners to deliver aimed, murderous fire from their .50-caliber machine guns at ranges up to 1,000 yards; fighters have to press in much closer than that.

In use (but highly secret)...

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