 5281
and 5282 Circular Psychrometric Slide Rule
Description
The Model 5281 circular psychrometric slide rule can be used to calculate
both dew point temperature and relative humidity from wet-bulb and dry-bulb
temperature readings. Easy-to-follow instructions are printed on the face
of the slide rule, which is constructed of sturdy plastic. The slide rule
can accommodate wet-bulb temperatures from -60º to 85ºF and dry-bulb
temperatures from -60 to 120º F. One side of the slide rule is used for
calculations in the lower part of the temperature range, and the other side
is used in the higher part of the range, greatly increasing the resolution
of the calculations.
The Model 5282 is the metric version of Model 5281 and accommodates wet-bulb
temperatures from -ºC to 30ºC and dry-bulb temperatures from -ºC
to 49º C.
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