reluctance pickup

reluctance pickup

[ri′lək·təns ‚pik‚əp]
(engineering acoustics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Featuring three variable reluctance pickups, each with a 5[micro] diamond stylus, this gage can measure the full range of roughness parameters such as Ra, Rp, Tp, and Rsk on main and rod journals and thrust faces.