Control jig

The utility model discloses a control jig, which is used for measuring the angle of a screen body of an arc-shaped display screen, an angle block is arranged on the screen body, the control jig comprises a seat body and a measuring mechanism arranged on the seat body, the measuring mechanism comprises an X-axis measuring unit capable of moving along the X-axis direction and a Y-axis measuring unit capable of moving along the Y-axis direction, and the X-axis measuring unit and the Y-axis measuring unit are arranged on the seat body. The X-axis measuring unit is used for detecting the X-axis distance difference of the angle block, and the Y-axis measuring unit is used for measuring the Y-axis distance difference of the angle block, so that the control jig can obtain the angle of the angle block according to the ratio of the X-axis distance difference to the Y-axis distance difference. Therefore, the screen body can be spliced into arc-shaped display screens with different radians through different angles of the