rotating-beam ceilometer
rotating-beam ceilometer
[′rō‚tād·iŋ ¦bēm sē′läm·əd·ər] (engineering)
An electronic, automatic-recording meteorological device which determines cloud height by means of triangulation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.