A dew meter, also known as a dew point meter, is an essential tool used to measure the dew point temperature, which is the temperature at which air becomes saturated with moisture and begins to condense. Dew meters are widely used in industries where moisture control is critical, such as HVAC, manufacturing, pharmaceuticals, and meteorology. Accurate dew point measurements help to prevent issues like condensation, mold growth, and equipment corrosion by managing humidity levels effectively.