The utility model relates to a measuring line take-up and pay-off device for an instrument and meter. The measuring line take-up and pay-off device comprises a pay-off reel, a rotating shaft and a spring mechanism. The pay-off reel is composed of wheel discs on the two sides and a shaft sleeve which is fixed in the middles of the two wheel discs, and the rotating shaft is mounted into the shaft sleeve. The spring mechanism comprises a spring and a spring containing shell. The spring containing shell is fixed on the outer side wall of the wheel disc on one side, the spring is mounted inside the spring containing shell, and one end of the spring is fixed on the inner wall of a shell body of the spring containing shell. One end of the rotating shaft extends out of the outer side of one wheel disc and then is fixedly connected with the other end of the spring, the other end of the rotating shaft extends out of the outer side of the wheel disc on the other side, and a rotary table is fixed at the extending end. A handle is mounted on the outer side face of the rotary table. One end of a measuring line is connected to the rotating shaft, in the paying-off process, the spring is tightened so that energy can be stored, after external force is removed, the spring releases the energy to drive the rotating shaft to rotate, the measuring line is taken back, and the take-up speed can be controlled through the handle. By means of the measuring line take-up and pay-off device for the instrument and meter, the take-up and pay-off operation of the measuring line can be convenient, the measuring line is mainly subjected to rolling friction, and thus abrasion of a wrapping layer can be effectively reduced.