Different types of sphygmomanometers have different methods of reading values, such as barometer sphygmomanometers that observe the scale where the needle is pointing, electronic sphygmomanometers that display the value directly, and mercury column sphygmomanometers that look at the surface of the mercury to read the value.
There are many types of sphygmomanometers, the barometer sphygmomanometer for patients to measure, observe the pointer pointing to the location of the scale is the value of its blood pressure. Electronic sphygmomanometers measure the data directly on the screen, with intuitive read out. Mercury column sphygmomanometer measurement line of sight to look at the mercury surface to read.
Blood pressure measurement should read the systolic and diastolic blood pressure values, normal systolic blood pressure 90mmHg ~ 139mmHg, diastolic blood pressure 60mmHg ~ 89mmHg, according to the measured values to determine whether the blood pressure is in the range of normal values, to understand the body whether there is low blood pressure or high blood pressure.
Only when you know the correct way to measure and read the values can you accurately determine whether your blood pressure is normal or not.