An automated, battery-powered, portable electronic device designed to calculate the ankle brachial pressure index (ABPI), used in the diagnosis of peripheral vascular disease (PVD), from simultaneous oscillometric measurement of the ankle and brachial blood pressure indices. It typically consists of a control/analysis/display unit with cuffs placed around an arm and one or both ankles; it uses integrated transducers to measure cuff pressure oscillations which represent the fluctuations of pressure in the underlying blood vessels. The device is typically operated by a healthcare professional.