SG Tool Aid 32000 Mechanic’s Stethoscope

Features:Excellent technician’s aid designed to detect and locate sources of abnormal noise. Allows technician to quickly find and analyze the source of a problem in engines of other moving parts. Sound is transmitted and amplified through a sensitive diaphragm. Use to pinpoint worn or defective bearing; locate cylinders with engine knocks; and determine if any fuel injectors are hung-up or inoperative. Includes a 12″ probe extension.