Glass thermometers are delicate hollow Glass tubes containing mercury or a mercury-free substance. These substances are sensitive to temperature changes. When the substance in the thermometer comes in contact with heat in the mouth or other body part, the substance rises up the tube until the maximum temperature is achieved?this normally takes about 3 minutes. The outside of a glass thermometer is marked with lines, or calibrations, and numbers. These markings help us measure exactly the temperature reading displayed
Technical Parameters
Oral clinical thermometer with white or yellow background, 35-42 in C scale or 94-108 in F sclae packing:12pcs/doz,60dozs/ctn dimension:44*28*17cm gross/net weight:7/6.5kgs
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