emergency recorder plot
emergency recorder plot[ə′mər·jən·sē ri′kȯrd·ər ‚plät]
An emergency substitute for a tactical range recorder, consisting of a plastic sheet representing space and time coordinates on which speed and distance data are marked with a grease pencil as they are called off verbally. Abbreviated ERP.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.