Method of minimum
The method of minimum is used when the circuit cannot be approached.
In this case it completes the method of maximum (see above) to obtain
greater accuracy.
For this method of minimum, position the Receiver parallel to the conductor.
Now move the Receiver one way or the other (see B and C) to find the
minimum deviation of the visual display (see A).
The Receiver is now lined up with the wire.
This method can give an accuracy of a few centimetres even if the
Receiver is several tens of centimetres from the wire.
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