NEW Tramex CRH, the latest and most advanced moisture and relative humidity meter. The CRH combines 4 testing modes: Moisture content (non-destructive impedance method); Internal relative humidity in concrete to ASTM F2170 (below surface method); Surface relative humidity (with the RH hood method); Ambient relative humidity, temperature, and dew point. Storage and recall of over 600 records in its memory. PC interface and software for downloading of readings to spread sheet or report.