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The Thermometer Hygrometer is the most accurate incubator thermometer available and has approximately a 4" stem which can be inserted in a 5/32" hole to permit reading of temperature from outside the incubator. The 2" dial permits easy and accurate reading of temperature and is graduated in one degree increments from 25 degrees to 125 degrees.
The # 3018 Thermometer is supplied with a wick and may be used as a Hygrometer by mounting it in the "Hygrometer" hole on the side of the incubator. Cover about 3" of the thermometer stem with one end of the wick, and drop the other end of the wick into the moisture pan. For the most accurate wet bulb temperature, be sure to keep the wick clean for most accurate reading.