• Dual purpose set detects both mechanical and air induced sounds.
• Use the black diaphragm chamber and screw-in metal probe to detect mechanical sounds from bearings, engines, transmissions, etc.
• For air induced sounds, attach the vinyl hose to the hollow tube and funnel assembly
• The funnel amplifier will detect noises from vacuum leaks, exhaust leaks, air leaks and wind noise
• For hard to reach locations, remove the funnel and use the hollow tube