Botsball Thermometer Kit, Burner Parts

The Botsball thermometer, formerly called the Wet Globe thermometer, combines air temperature, humidity, wind and thermal radiation into a single reading that is closely related to human responses. The Botsball thermometer consists of a 2-3/8" hollow copper sphere that is painted black and covered with a double layer of black cloth. The cloth covering is continuously moistened by water seeping from the aluminum reservoir tube attached. The stem of the dial thermometer passes along the centre-line of the water reservoir tube and into the globe to sense its temperature.

When the Botsball thermometer is placed in a hot area, the globe is warmed by the surrounding air and by heat radiated from hot surfaces. It is also cooled by evaporation according to the wind and humidity. After 5 minutes, the Botsball thermometer reaches an equilibrium temperature which provides a direct physical measure of the thermal environment. Supplied in a kit containing the wet globe assembly with attached water reservoir, an 8 oz. squeeze bottle for filling the reservoir, a special dial thermometer inserted into the globe, and operating instructions.

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