Thermometer metering device and use method thereof

The invention relates to the field of thermometer metering, and discloses a thermometer metering device and a use method thereof. The thermometer metering device comprises a device body, a temperaturecontrol assembly, a first placement piece and a second placement piece, wherein a containing cavity is formed in the device body, a liquid working medium is contained in the containing cavity, the device body is provided with at least a first mounting hole and a second mounting hole, the first placement piece is arranged in the first mounting hole, the second placement piece is arranged in the second mounting hole, the first placement piece is provided with multiple placement sites, all the placement sites are communicated with the containing cavity, the placement end face of the second placement piece is provided with a placement hole located in the middle, the inner portion of the second placement piece is provided with a cavity, and the placement hole runs through the cavity. Simultaneous metering of various t