CLINICAL THERMOMETER

PROBLEM TO BE SOLVED: To enable reduction of the number of parts, improvement of assembling characteristics and easy exchange of battery by constituting a battery cover with a cover and an inner elastic body comprising a switch part, and integrating the cover and the elastic body in different colors. SOLUTION: A cover 10 and an elastic body 20 having a switch part 21 are integrated, and further an O ring function is performed by engaging a protrusion 6 of a main body housing 1 with the elastic body 20, so that the number of parts is fewer than a conventional structure. As a result, assembling characteristics is improved, so that a battery cover unit 3A is easily attached- detached from a unit attachment/detachment part 1a of the main body housing 1, thus battery exchange is easily performed.