Feaures:
1. Sound amplification with volume control
2. Headset combined with ear defenders to cut out background noise
3. Two probe lengths 60 and 290mm
4. Strong probe body, black ABS molding
5.9 volt alkaline battery for about 30 hours continuous operation
6. Instrument case and battery included
Application:
Quickly pinpoints source and location of noises emanating from under chassis
Under hood, transmission, differential/CV joint, faulty fuel injectors and isolate
Suspension parts
Helps detect and isolate squeaks, rattles, groadns, cowl "pops", clunks, growls, thumps
Rumbling and ticking noises
Audited Supplier 
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