Artillery observer errors in flashing high burst registrations with the M2 aiming circle.
Castleman, Robert Jones
Arima, James K.
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This thesis is addressed to the problem of determining the magnitude and direction of artillery observer errors in flashing high burst registrations with the M2 aiming circle, The task of flashing high burst registrations was simulated by using neon lamps to represent the visual stimulus presented by an exploding artillery round. Nineteen field artillery officers were used as subjects in an experiment conducted to collect the necessary information. It was found that larger errors were committed for measurements made in the vertical direction than for those in the horizontal direction. Most accurate measurements were made for flashes appearing in the first quadrant of the aiming circle reticle and for those appearing near the center of the reticle.