Often, an area needs to be temperature monitored,
but because of space limitations, the IRt/c cannot
be placed to view the target area squarely. In such
situations the IRt/c can be angled obliquely to view
the target area. The field-of-view then becomes
elliptical instead of circular, and the IRt/c averages
the temperature it sees.
To apply this method, be sure to estimate the size of
the field-of-view footprint, and confirm that the IRt/c