Universal meter

The utility model discloses a universal meter. The device comprises a body and a meter pen, the meter pen is connected to the body through a wire. The meter pen comprises a pen tube, a clamping part of a scissor structure is installed at the bottom end of the pen tube, the clamping part comprises two clamping pieces which are symmetrically arranged and hinged to each other, one end of each clamping piece is provided with an arc-shaped concave part, the meter pen further comprises a driving component of an X-shaped structure, and the driving component is composed of two driving plates which arecrossed with each other and hinged to the crossed point. The two tensioning wheels are mounted on the two sides of the driving part, so that when the driving rope is pulled upwards, the two driving plates are far away from each other and are opened, and the two concave parts of the two clamping pieces are opened; the driving rope extends upwards in the pen tube, bypasses one supporting wheel andthen extends out of the pe