spark-coil leak detector

spark-coil leak detector

[′spärk ¦kōil ′lēk di‚tek·tər]
(engineering)
A coil similar to a Tesla coil which detects leaks in a vacuum system by jumping a spark between the leak hole and the core of the coil.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.