Model THI-10 measures relative humidity and ambient temperature. Up to 99 readings can be stored in nonvolatile memory, allowing the technician to retrieve the recorded data after returning to the office. This compact thermohygrometer also has user-selectable engineering units, maximum/minimum functions, and dewpoint and wet bulb temperature measurements.

Dwyer Instruments Inc., (800) 872-9141

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• Dwyer Instruments Inc.