Instrument install device

The utility model relates to a dovetail groove socket contact type instrument installing device, which comprises a screw 4. The utility model is characterized in that: during the course of the formation of the thermoplastic shell wall, a T-shaped concave dovetail groove 1 is respectively arranged at the two ends of the thermoplastic shell wall; an installing hole is arranged at the two ends of the back of the shell body close to the dovetail groove, and a metal nut is embedded or injectedly molded; a Z-shaped installing bolt 3 is arranged in match, and a holddown hole corresponding with the nut hole is arranged on one head face; two concave notches are arranged at the bending turning point of another head face. A convexity is arranged up on the main bolt body, whose convex direction is in accordance with the bending direction of the head face with concave notch. A calibrating hole 5 is arranged in the dovetail groove; for facilitating convenience for calibrating, correspondingly two concave notches 6 are arranged on the dovetail groove. The utility model provides a dovetail groove socket contact type installing device for installing a meter, which can provide a compact arrangement for meter installation, as well as a convenient installation and application and high reliability.