Manual Blood Pressure Monitor BP Cuff Gauge Aneroid Sphygmomanometer Machine Kit The manual blood pressure monitor ensures effortless and professional blood pressure reading at home or in the clinical environment. The aneroid sphygmomanometer is equipped with a metal air needle valve with a smooth pressure relief regulation. This device has been clinically tested and calibrated to be one of the most precise and reliable blood pressure measurement devices on the market today.The adult velcro cuff is constructed of high-molecular polymer nylon. The seamless inflation bag is constructed of crack-resistant, non-stick, high-density latex-free PVC. High contrast white background plus controlled manual deflation for ultimate user control.