Thermometer clip a few minutes is generally for the mercury thermometer to measure the underarm temperature, generally recommended clip about 10 minutes. When measuring body temperature generally clip about 10 minutes human body temperature through direct heat dissipation, fully respond to the thermometer. Before measuring must be careful to shake the thermometer to below 35 ℃, wipe the armpit clean, the head end of the thermometer placed deep in the armpit, the upper arm clamping the thermometer, do not leave any gap. 10 minutes after the removal of the reading, reading must be flat, so as not to cause errors. If the measurement position is not correct, the measurement time is too short may lead to inaccurate measurement and low value, affecting the true judgment effect. If the oral or anal temperature is measured, it usually takes about 5 minutes. In addition, the thermometer is not the longer the clip the better, too much time may cause temperature fluctuations, can not reflect the temperature situation at the time.