A clinical thermometer is a kind of thermometer which is developed for clinical use in humans being or animals. There are a lot of considerations incorporated into the basic design of Clinical Thermometers, comprising the requirement to reduce the danger of cross-contamination between patients. There are Clinical Thermometers which are developed for home use for people who wish to track their temperature. Earlier, Clinical Thermometers were made with mercury however today we hardly see these thermometers in clinical use. At times, these thermometers can hard to to use, as they required to be held in place for longer period of time.