THERMOMETERS.The range of laboratory thermometers is usually from –10°C to 110°C.TEMPERATURE is a measure of the degree of hotness of an object.The thermometer is a device used for measuring temperatures.A clinical thermometer is used to measure our body temperature. The thermometer was INVENTED by Galileo Galilei in 1592.Digital clinical thermometers are SIMPLE, available commodities and may be used with RELATIVELY high precision (±0.1°C) in the range of 32°–42°C (89.6°–107.6°F).