Hygrothermograph placement

In Instance 10:67, Rick Dzupina asks about the "best" position for a
thermohygrograph within a room.  This depends on what you are
trying to measure. Are you interested in the environment of a
particular object within the room? Are you interested in an
"average" figure for the whole room?  Unfortunately the environment
in most rooms varies from place to place.  By using a lot of
thermohygrographs you can get an idea of how the conditions vary
from place to place throughout the course of a day.  Clearly there
will be differences near doors and windows, sources of heat,
ventilation grilles and so on.

Barry Knight
English Heritage
London

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                  Conservation DistList Instance 10:69
                 Distributed: Monday, February 3, 1997
                       Message Id: cdl-10-69-005
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