Meter pen probe sleeve device used when universal meter is used for measuring serial port

The utility model provides a meter pen probe sleeve device used when a universal meter is used for measuring a serial port. The utility model belongs to the technical field of measuring instruments. A slot is inserted in a hole of a meter pen probe insertion pipe. The meter pen probe insertion pipe is inserted in a hole of a plastic jacket. A sleeve ring is embedded on the slot, and can slide up and down on the surface of the slot. A probe is positioned at the lower end of the sleeve ring. The slot integrally connected with the meter pen probe insertion pipe is a semicircular metal slot. A space with an internal spacing of 1mm is formed by the combination of the probe and the slot. With the device provided by the utility model, a male head serial port can be conveniently measured by a single person, such that the difficulty for a single person to measure a male head serial port with an existing meter pen probe is eliminated. Because the meter pen probe is indirectly fixed on a male head insertion pin, a possi