A device and manufacturing method for a medical device. The frame member is bent to form an upper straight portion and a lower straight connected by a bent portion. A rigid mounting device is mounted to an attachment location of the upper straight portion. A plurality of mounts are connected on the lower straight portion, wherein each plurality of mounts has a top surface. The bent portion is configured to align with a centerline extending through the center length of the mounting device to be level with all of the top surfaces. The method includes mounting marker elements on each mount and aligning a centerline of each marker element with the top surface to form a pre-attached marker assembly ready for use.
