Polymeter with thermometer

 

To determine the relative humidity and the saturation vapor pressure (dew point) - Complete instrument on metal bracket with hair hygrometer (0-100% relative humidity) and thermometer. With measurement range -30+50:1°C, red filling, hair hygrometer 0-100% relative humidity.

Refill thermometer: Enclosed scale, with printed scale for saturation vapor pressure in mbar, milk glass scale, capillary lens front, red filling