I've used mechanic's stethoscopes with success several times with my own projects. It's always a relief to discover that the new, scary noise is nothing more than a belt tensioner bearing or a ...

Doctors are supposed to wash their hands before touching a patient. But that stethoscope draped around the doctor's neck may be loaded with bacteria, too. Cleaning it would help, researchers say.

If you’ve been looking for a good stethoscope, the 3M Littmann Classic III is almost impossible to beat. Many doctors, nurses, and patient care technicians use this best all-around stethoscope.

A mechanic's stethoscope can be used to diagnose all sorts of engine- and drivetrain-related noises, from faulty bearings, to ticking cylinder heads, to knocking crankshafts.