Accusure Non contact Infrared thermometer is sleek and handy in design with fast measurement and memories upto 10 readings. It can be switchable from Centigrade to Farehnite and vice versa. The temporal artery is connected to the heart via the carotid artery. So it is designed to measure the skin surface around temporal artery, a major artery of the head .Aim the thermometer at the center of the forehead with a distance of 2 to 3 cm and then press the START BUTTON. Note: Do not remove the thermometer from the forehead before hearing the final beep.