This document summarizes the measurement of arterial blood pressure. It defines systolic and diastolic blood pressure as the force exerted on blood vessel walls during contraction and relaxation. It explains that blood pressure is typically measured in the brachial artery using a sphygmomanometer and stethoscope, by listening for sounds during inflation and deflation to determine the systolic and diastolic readings in mmHg. Finally, it outlines two methods for measuring blood pressure - palpation of the radial pulse to find systolic pressure only, or auscultation of the brachial pulse over the brachial artery to determine both systolic and diastolic pressure.