The Riester Precisa N Aneroid Sphygmomanometer is a classic quality product from Riester. It comes in metal along with strong plastic housing & simple tube connection. It is perfect as a secondary or a reserve mobile device that is best suited for office practice as well as every hospital. It has a bulb that is latex-free & is used to pump up the cuff of the metal valve. It also has a base spoon-shaped Ergonomic grip made from stainless steel & a single-tube link. Precisa N Aneroid Sphygmomanometer from Riester has a precision valve for air release has fine adjustments & the Micro filter is wear-free & shields the valve for air release & measuring system. Furthermore, there is an especially tempered diaphragm made from copper-beryllium that is non aging & offers precision movements. The diaphragm has a 600 mm Hg pressure-loading faculty with a tilted & linear aluminium scale that reads from a 0-300 mm Hg (which is easily legible). The device has a highest error tolerance of +/- 3 mm Hg & also has nylon calibrated adult Velcro cuffs.