NT – 06 WET & DRY BULB HYGROMETER

Consist of mercury in glass or spirit thermometers, clamped on wooden/plastic frame, scales marked both in centigrade and fahrenheit -10oC to + 50oC x 1oC, 14oF to +120oF x 2oF. These thermometers are marked Dry and Wet. Bulb of Wet thermometers covered by muslin wick connected to a plastic water reservoir to keep it moist. Dimensions – length x width 300 x 100 mm. Includes the chart.