This three-in-one Hygro-Thermo-Anemometer Model 45160 is pocket-size, yet packs in a lot of performance, according to company officials. The large LCD displays temperature and air velocity and relative humidity. A built-in thermistor provides ambient temperature measurements, while an optional Type K thermocouple makes the unit suitable for high temperature measurements.

Tjernlund Products Inc., 1601 Ninth St., White Bear Lake, MN 55110-6794; (800) 255-4208; fax (651) 426-9547.

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