Quote Originally Posted by 12vdc View Post
Mechanic's stethoschope. Nagkalat sa Lazada less than P500
So, it is really called as a stethoscope. Thank you, I might give this as a gift to my brother who is maintaining an older car.

I remember using a copper tube whose end is pointed and the other end with a 1 cm diameter sphere. I'm​ not sure if it's called "listening rod".