The metal housing MANOMETER is shock resistant, anti corrosive, and durable. Comes with protective bumper, optimum overall unit protection, and durable polycotton fabric cuff that can be washed. Gauge is easy to read from every angle. This high precision device is available in all sizes and offers precise linear compression/decompression. The latex free bladder. The cuff is calibrated (artery, size range, index markings) and easy to adjust so that you have exact positioning for the circumference of the arm.