Car Mechanics Stethoscope Kit, Precision Vehicle Engine Diagnostic Hearing Device with Extended Probe, Automotive Stethoscope Engine Hearing Tool, Universal for Truck Sedan RV

If you've ever had a whine, squeal or other strange noise coming from a piece of machinery, you know that it can be difficult to pinpoint the source. This gizmo looked like just the thing to resolve that issue. So, it was ordered. The package arrived overnight which was just as anticipated. The stethoscope was in good condition inside its retail blister package. It does require a minimum amount of assembly: There is a 12-inch-long pickup rod which must be attached to the transducer. The rod is threaded on one end and that end needs to be inserted into the small, white bushing at the end of the transducer. Careful alignment of the rod will allow it to be threaded into the proper location inside the transducer. Then, the transducer's isolating cover can be slipped over the rod and positioned on the transducer. That's it. Not too long ago, we had a vehicle with odd noises coming from the engine compartment. I used a piece of 3/8" diameter rubber tubing as a "stethoscope" of sorts and identified the source as the alternator. Mechanic disagreed and said it was the A/C compressor. One new compressor later, the squeal was still present . . . If I'd had this device, I would have stuck to the alternator diagnosis because the tubing is inherently less accurate. Given the cost of that "experience," I'd just as soon not have to use this stethoscope. But, if I do, this device will allow me to handle it more confidently.