Red Spirit Hygrometers


Palmer hygrometers are used to measure the humidity of air or gases.  Our hygrometers are the psychrometer type, consisting of two calibrated thermometers, one dry and one kept moist by a wick.

Part NumberDimensionsTemperature RangeScale DivisionsTube & Scale Refill Part Number
6305X8.75 inches x 4.5 inches20 - 120°F&°C6305X-TS
6306X8.75 inches x 4.5 inches60 - 220°F&°C6306X-TS
6309X8.75 inches x 4.5 inches75 - 105°F6309-TSX



Red Spirit Fill in all models