What are you doin'? Auscultatory percussion.

The two most common techniques for pressure measurement are the auscultatory and oscillometric techniques.

The mercury sphygmomanometer uses the auscultatory method to measure blood flow.

Aneroid sphygmomanometers also use the auscultatory method to measure blood flow.

The auscultatory method involves the listening for characteristic blood flow sounds, and the oscillometric technique uses a pressure transducer.