Question

blood is measured by ​

Answer 1

we can't measure blood we measure blood pressure and it is measured in two parts first is systolic pressure and second is in diastolic pressure.

Answer 2

Blood pressure is measured using two numbers. The first number, called systolic blood pressure, measures the pressure in your blood vessels when your heart beats. The second number, called diastolic blood pressure, measures the pressure in your blood vessels when your heart rests between beats.