In a local stethoscope unit, acoustic auscultation sounds picked up by the stethoscope chest piece assembly of a local stethoscope unit are converted to analog electrical signals and then converted to digital signals. The first slider is movable in one direction for moving the carrying portion together with the recording medium up to a specific withdrawal position. Each switch element comprises a source electrode, a drain electrode, a gate electrode, and an opening between the source electrode and the drain electrode. Further, the PL of the PS substrate can be enhanced by treating the PS substrate with a dye. In certain embodiments, the tool holder has a tool-seating mechanism adapted for moving a tool parallel to a pressing axis of the tool holder. The flowmeter also includes a thermal type detection device including a temperature sensor and a heating temperature sensor, each protruding into the flow channel, and a flow rate converter, in which a pressure gauge for measuring a pressure in a pipe wired together with the vortex detector and the thermal detection device is provided integrally with the flow rate converter.