The utility model discloses an operative installations of universal meter, the device includes that chassis and clamping machine construct, the longitudinal section shape on chassis is the longitudinal section shape of straw hat, shape of cross section is the rectangle, magnetic base has been installed on four angles on the chassis both sides surface respectively, four minutes of bottom disk upper surface do not are equipped with the track that constructs cooperation sliding connection with clamping machine, this mechanism includes four anchor clamps, every anchor clamps bottom be equipped with with bottom disk upper surface every angle on track cooperation sliding connection's sleeve pipe, be equipped with first screw on the sleeve pipe basal surface, the first bolt that has with first screw cooperation installation, every anchor clamps middle part is the spill draw -in groove, wherein telescopic suit is passed through with second section to first section of spill draw -in groove linking arm, be equipped with the third screw on the upper surface of anchor clamps top, there is the third bolt with the cooperation of third screw, the device can solve the problem that the universal meter was sticked up or was hung, and a worker can accomplish the task of awaiting measuring, not only reduces labour cost, improves work efficiency moreover.