PM-458 WHIRLING HYGROMETER

These hygrometers are mainly used for greater accuracy of
humidity determination. Consist of two Wet and Dry bulb

thermometers range -5 C to + 50 C x 0.5 C with lens front for easy
reading, mounted on wooden or plastic frame. Bulb of one
thermometer is covered with a muslin wick dipped in the plastic
water reservoir. With plastic handle.
Dimensions 225 x 30 mm. Handle length 100 mm.