Before the stethescope the urine flask was the sign of the physician

[BaalChatzaf]

Before the stethescope was invented the only equipment doctors had to see what was going on with their patients was the urine flask and the bed pan.

See:  https://www.theguardian.com/science/the-h-word/2016/feb/25/how-to-spot-doctor-before-stethoscope-history-medicine