the elbow is locked so that a wrist height measurement relative to the user 39 s shoulder may be calculated using an angle of the arm and a shoulder to wrist length as the user moves their arm to different heights a swept pressure signal may be received 518 the swept pressure signal may include a plurality of pressure pulses that vary in amplitude due to changing hydrostatic pressure experienced at the wrist at the different heights as discussed above a desired applanation of a target artery where the arterial wall is flattened and the arterial pressure is perpendicular to the surface may occur at a desired height between the first wrist height e g resting position where the arm is positioned by the user 39 s side where the transmural pressure is positive and a second wrist height e g a raised position above the resting position where the transmural pressure is negative or vice versa at this desired height where the transmural pressure is zero the hydrostatic pressure acting on the user 39 s wrist and the constant pressure applied at the wrist may applanate the artery such that the arterial pressure stress is measured by the pressure sensor accordingly in a height swept pressure signal with a plurality of pressure pulses measured at different heights the desired applanation of the target artery is associated with the pressure pulse with the largest amplitude i e u201c maximum pressure pulse u201d thus after receiving the swept pressure signal 518 a maximum pressure pulse in the swept pressure signal is identified 520 as it is.