Utilities electric co. is used for changing fixture of ammeter

The utility model discloses an utilities electric co. Is used for changing fixture of ammeter, including holding down plate and top board, the middle part of holding down plate upper end both sides all is equipped with the fixed block, two the opposite side of fixed block all is equipped with the draw -in groove, the both sides of top board are equipped with the movable groove that is used for the movable mounting movable block, the inner chamber bottom in activity groove is connected in the movable block through spring and second dog, the outside in activity groove is equipped with the first dog corresponding with the second dog, a motion distance for the limited motion piece, prevent that the movable block from taking off the groove, the outside middle part of movable block is through fixture block swing joint in draw -in groove, an it is fixed for being directed at the top board, the outside of movable block still is equipped with two dead levers, a motion for controlling the movable block, thereby control