Inner molded surface contour parameter measuring device

The utility model discloses an inner molded surface contour parameter measuring device comprising an L-shaped seat body, the bottom face of the seat body is provided with a clamping tool, a vertical part of the seat body is connected with a horizontal slide seat, a horizontal leading screw is connected to one end of the horizontal slide seat in a movable manner, an end part of the horizontal leading screw is provided with a first handle, an equal arm lever is connected to the other end of the horizontal slide seat in a rotating manner through a connecting member, the top end of the seat body is provided with a vertical leading screw, an end part of the vertical leading screw is provided with a second handle, an X direction digital display indicating gauge and Y direction digital display indicating gauge are orderly arranged along the vertical direction of the seat body from top to bottom, a probe of the Y direction digital display indicating gauge contacts with the upper surface of the horizontal slide seat, a probe of the X direction digital display indicating gauge contacts with the upper end of the equal arm lever, and the lower end of the equal arm lever is provided with a measuring head. The device can be used for accurately measuring coordinates of points on an inner molded surface of a part, and contour parameters of the inner molded surface can be well obtained; the inner molded surface contour parameter measuring device is characterized by simple structure, convenience of control, economical and practically properties and the like.