Hygrometers

Hygrometers measure relative humidity, and most also read temperature. Several models in this collection also calculate dew point and wet bulb, the values HVAC technicians, building inspectors and restoration crews rely on.

The range runs from professional handhelds like the Cooper-Atkins SRH77A-E and General Tools SAM990DW psychrometer, to pen-style meters, compact wall units and the PMRH120 panel meter, plus wireless thermo-hygrometers for monitoring a room from a distance.

Need documented accuracy? Choose a NIST-certified model, or ask about certifying your meter. Tech Instrumentation has sold, serviced and calibrated temperature and humidity instruments since 1990.