The complex arterial function (stiffness) measurement with Arteriograph is as simple as a blood pressure measurement on the upper arm. This world-wide patented, innovative device measures all the relevant arterial function parameters such as aortic pulse wave velocity (PWVao),augmentation index (Aix) and central blood pressure values simultaneously with the peripheral blood pressure. Features: EASY, as an oscillometric blood pressure measurement, Fast, as it takes only 2 minutes (including patient data input), USER INDEPENDENT, as it is fully automatic; the users only have to launch the measurement. EXCELLENT REPRODUCIBILITY, as it is proved to be superior to the reproducibility of other available methods. LOW VARIANCE, as it is proved to be the lowest among non-invasive arterial function assessing methods. (Variance is the estimate of measurement errors for the repeat measurements within one session.) OUTSTANDING COST-BENEFIT RATIO, among clinically accepted devices. VALIDATED, to invasive and non-invasive measurements.