One aspect of the present invention is a system and method to measure a
pressure or other measurement at a source (e.g. a hydraulic power supply)
and in or near a downhole tool and compare the measurements to verify
that, for example, the supply is reaching the tool. Another aspect of the
present invention is a system and method in which a gauge is positioned
within a packer. Yet another aspect of the invention relates to a gauge
that communicates with the setting chamber of a packer as well as related
methods. Other aspects and features of the system and method are also
described. It is emphasized that this abstract is provided to comply with
the rules requiring an abstract, which will allow a searcher or other
reader to quickly ascertain the subject matter of the technical
disclosure. It is submitted with the understanding that it will not be
used to interpret or limit the scope or meaning of the claims.