Electronic clinical thermometer

An electronic thermometer comprising a casing, an electronic thermometer module mounted in the casing, a metal probe electrically connected to the electronic thermometer module for sensing the body temperature, a flexible covering covered on the casing, the flexible covering having a tapered front portion protruded over the front side of the casing to a distance, and a hard stem is separable from the flexible covering and making a threaded connection between the metal probe and the distal end of the tapered front portion of the flexible covering, the flexible covering comprising a press portion for pressing by a finger to switch on/off the switch of the electronic thermometer module, and a bellows portion extended around the press portion for enabling said press portion to be easily deformed to switch on/off the switch, said casing having a locating flange which is integrally formed with said casing and extended around the periphery near the rear side, and a locating groove extended around the periphery adjacent to the locating flange, a cap having an inside engagement portion fitting the locating flange and locating groove of said casing, said engagement portion being forced over said locating flange into watertight engagement with the locating groove of said casing, said flexible covering extending from the front end to the rear end of said casing and being made integrally, said casing having two embossed portions integrally formed with said casing and symmetrically provided at two sides thereof for resting of fingers to hold the electronic thermometer and for decorating the casing.