Word: 19s
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Dates: during 1940-1949
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About the size of a suitcase, weighing 128 lb., the compact device is already in use for testing all types of planes from single-seater fighters to B-19s. A recorder costs $2,000 (Glenn Martin paid for one in a week with money saved in life-insurance premiums for the three observers usually carried on heavy bomber test flights). But the supply of recorders is still limited...