Provided Thermal hygrometers are employed to compute the wet bulb temperature as well as dew point in an automated way. these work well with small diameter probes and are largely helpful for all HVAC/R experts & contractors. Provided measuring instruments can measure the relative humidity, and temperature of rooms in an accurate manner. The users can effortlessly read the measurements on these powerful & easy-to-use tools. The Thermal hygrometers work greatly for the diagnostics of small as well as large HVAC/R systems.