Connecting device for handheld measuring and reading instrument

The utility model provides a connecting device for a handheld measuring and reading instrument, which comprises a shell and is characterized in that a plurality of through grooves are arranged in the shell, a probe sleeved with a spring is arranged in each through groove, two ends of each probe respectively extend out of the corresponding through groove, one end of each probe is a contact end matched with a terminal of an acquisition module, and the other end of each probe is connected with a transmission line. And the transmission line is connected with a wire clamp of the handheld measuring and reading instrument. When the device is held by hand, after the probe touches the terminal of the acquisition module, required monitoring data can be obtained from the handheld measuring and reading instrument connected with the device, and the probe and the terminal of the acquisition module are kept in good contact through the spring on the probe, so that the problem of inaccurate measurement caused by poor contact