The 210-4417 Globe Thermometer is used in studies to determine heat stress. A 6-inch-diameter hollow copper sphere is painted with a matte black paint to absorb the radiant heat from surrounding objects. After a time lag, the temperature at the center of the sphere is a measure of the radiant heat. A thermometer inserted through a rubber stopper indicates this temperature from 0° to 100°C (0.5° graduations). The 210-4417 is supplied with a heavy stand and a mounting support.