BELART COMPACT SLING PSYCHROMETER WET DRY SPIRIT HYGROMETER
Pocket-sized black 2-piece hinged body which extends to form the instrument for instant use.
Calculator scales printed on the case for 'slide rule' simplicity.
This instrument uses shorter tubes and the design incorporates a "slide rule" type calculator to determine the %RH.
The body of the instrument slides away into the handle providing complete protection when not in use.
20 + 120 °F
-5 + 50 C