The LINE2design palm sphygmomanometer is the most often used BP gauge used by health care, most accurate and reliable manual blood pressure monitor. Ergonomic oversize palm design gauge enables precise single-hand air inflation and release. Superior quality high blood pressure aneroid sphygmomanometer with an extra-large, high contrast and easy to read gauge. This gauge ONLY fits the LINE2design BP Cuff Kit-5 by LINE2design.