Hygrometer

SKU# 5525

Model 5525 Hygrometer A wet and dry bulb hygrometer. Complete instructions included. Take the temperature difference between the dry bulb and wet bulb and use chart to find relative humidity in percent. Permanent chart can be read at a glance, swings aside on hinge for access to reservoir. Reservoir easily removed, easily refilled. Scale range 0 degrees to 120 degrees F (-18 degrees  to 40 degrees C) Reads in degrees F only. Plastic back, metal scale and 7" (18 cm) red spirit tube. Wt. 8 oz. (.23 kg).