Abstract: A device to aid in locating a hanger or support on a wall for supporting an object to be mounted at a desired location includes a bracket which temporarily attaches to the frame with a top portion overhanging the top of the frame and a back portion disposed behind the frame. A protrusion extends from the back portion in the direction of the frame to engage the wire or string of the frame, and a frame engaging screw is provided on the top portion to produce tension in the wire or string of the frame in a fashion similar to that existing when the frame is hung. A pin is provided in a channel in the device for producing a mark onto the wall onto which the frame is to be hung, the channel extending from a forwardly accessible location in the top portion to the exact location in the back portion at which the hanger must be attached to the wall to produce the desired location of the hung frame.