The utility model discloses a case becomes novel batch meter structure, the batch meter body is formed by left side board, right side board, last bottom end rail, back shrouding and front panel reciprocal anchorage, wherein goes up the front side of bottom end rail and fixes on the case frame that the case becomes, is equipped with batch meter door plant and spring bolt on the front panel, and the batch meter door plant can cut out through blocking the spring bolt. The utility model discloses become the cooperation with batch meter and case, set up in the case becomes special measuring room, reach abundant rain -proof effect.