Digital Absolute + Axis Goniometer (Built In) Goniometers Weight Capacity * Backrest has 416700 Weight Capacity * Backrest has two built in handles to make positioning easier * Converts easily for either left or right handed bathtub entry * Retail boxed Foam handles * Thread band or tubing through the hollow foam covered plastic handle before tying into a loop * Handle uniformly distributes the pressure across hand 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 *