Dear friends: Thank you for your attention to our products ! :)Sansha Brand:NARAAParts: oral armpit ApplicableHard head Type:Mercury thermometer for temperature measurement， necessary for healthy families， adults and children can be used on both， the precise degree， clear， family medicine chest of essential products[Tips]Body temperature like a barometer of the health of the state， the normal body temperature is generally 36 ° C ~ 37.3 ° C (subject to oral sublingual temperature)， 37.4 ° C ~ 38 ° C for the low-grade fever， 38.1 ° C ~ 39 ° C moderate fever， 39.1 ° C ~ 41 ° C is highly fever greater than 41 ° C for the super high fever;【Precautions】1， where the body temperature before measuring factors affect the actual body temperature (such as drinking water or cold drinks or sports， etc.) should be avoided， please rest 20 minutes after exercise and then measured， measuring more than five minutes， oh pro.2， glass thermometer highest temperature 42 ℃. Since the temperature of the glass bulb thinner should avoid drastic shake. Degree is 42 ℃， so the custody or sterilization temperature must not exceed3， measurements should be carried out in children under the supervision of an adult; if found damaged， should be urgently addressed， should avoid swallowing mercury clothing to prevent mercury poisoning.