detector car

detector car

[di′tek·tər ‚kär]
(engineering)
A railroad car used to detect flaws in rails.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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"Many of the 'pirates' are scared out of hiding as soon as the news spreads of the detector car's visit.
Radio Controlled Metal Detector Car www.crazyaboutgadgets.com