Traction Clevis Heel Elbow Protectors The integral absolute vertical and 14272 The integral absolute vertical and horizontal levels are permanently incorporated into the digital goniometer arm * Goniometer reads 0 180 degrees on LCD screen * Has ability to freeze angle measurement * Powered by 1 9V battery * Goniometer exterior is powder coated steel with inch cm marks screened onto arms * Digital angle reached in center * Horizontal and vertical levels to indicate level or plumb starting point * * Equipped with pre set body part specific settings as well as a customizable option it intuitively guides the patient step by step to ensure the ideal therapeutic treatment throughout the healing cycle Clevis for: 2841 4759 and 4739