EVALUATION OF AN OPTICAL SCAN SYSTEM FOR THE REDUCTION OF FLEET DIVING DATA.
NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
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In an effort to obtain an estimate of the validity and reliability of the data processed by an IBM 1230 optical scanner, control data was processed and checked against a set of master cards. Source documents were marked in three different ways - 2H pencil, 3H pencil, and ball point pen. Author
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