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If a "walk through" sewer is
being traced, another method
is to place the DIGIMOUSE
vertically, for example to
pinpoint a buried manhole. The
DIGICAT will pick up a pool of
signal with a null point at the
centre. This is an accurate
method, but it is essential to
ensure the DIGIMOUSE is
vertical.
The DIGISYSTEM and the DIGICAT
DIGICAT 100/200
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