Abstract: An aerosol generation device includes a first housing including an inner accommodating space and an opening exposing the inner accommodating space to an outside of the first housing; a second housing including an inner space and coupled to the first housing with a fastening portion; a battery inserted into the inner space of the second housing and having a part exposed to an outside of the second housing; a case into which the second housing is inserted, the case covering at least one of the first housing or the second housing; and a cap coupled to the first housing and covering the first housing, wherein the case covers the part of the battery exposed to the outside of the second housing.

Abstract: A gauge for a pressure measuring device, the gauge includes a gauge body disposed at the front of the pressure measuring device. The gauge body having a graduated circle, a range display window formed on a graduated circle and a pointer to indicate a scale on the graduated circle corresponding to a measured pressure by the pressure measuring device. A base plate disposed at the rear of the gauge main body and viewed through the range display window, and first and second gauge fans rotatably disposed on the base plate to set the pressure range of an upper limit value and a lower limit value on the graduated circle.