An instrument designed to mimic the pressure variations acting on the cuff of noninvasive arterial blood pressure monitoring/measuring devices when placed on a patient's arm. It typically simulates blood pressure values (e.g., systolic, diastolic, mean) and abnormal states (e.g, hypertensive, hypotensive). It usually consists of an internal pump to generate the testing pressures, manometers, electronic circuitry, and a display. The device is used to test oscillometric noninvasive blood pressure monitors and electronic sphygmomanometers as a complete set including the transducer; some may also be used to test auscultatory sphygmomanometers.