Abstract: A level hanger device includes a plate for attaching to a supporting surface and having a curved channel to define a bottommost area and to slidably receive a ball, and a transparent cover attached onto the plate, to enclose the curved channel of the plate and to slidably retain the ball within the curved channel of the plate, and to prevent the ball from being disengaged from the curved channel of the plate, and for allowing the ball to be seen through the transparent cover. The plate may be determined as located in a horizontal position when the ball is stably positioned in the bottommost area of the curved channel of the plate, to readily support the object on the plate at the horizontal position.