controlling magnet

controlling magnet

[kən′trōl· iŋ ‚mag·nət]
(engineering)
An auxiliary magnet used with a galvanometer to cancel the effect of the earth's magnetic field.
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References in periodicals archive ?
Two standard style bar magnets are available: Bantam Magnets and Magna-Bars, In automation processes, compact Bantam Magnets are used as holding magnets or retaining and controlling magnets.