Is the rod going into the chamber piece on either attachment loose, moving in/out causing a rattle & loud thud while wearing ear pieces?

The rod is for detecting metallic noise such as bearings, rocker arms, timing chain, water pump, wheel, transmission or axle etc etc .. also can be used for injectors, and relays, the hollow tube is for air leak, vacuum leak intake and exhaust leak. The rod is screwed into the plastic round box. You need to remove tube from the plastic box and connect it to the hollow tube to hear the air leak or vacuum leak, and use the rod to listen to any metallic noise. This is the same principle of the stethoscope doctors are using in the hospital which there is a part can be rotated to change to hear the different sounds air breathing and heart beat and blood flow. Do some experiments with some noises and you will find it very useful, a must for any Auto-mechanic

Will this work on a tractor too? I want to get it as a gift.

It will work great on a tractor. If you're hearing an odd noise during idle you'll be able to use the probe to check the water pump, hydraulic pump, valve train, alternator, etc. If you have a baler and you hear the squeak of impending bearing failure you'll be able to narrow down what shaft the bad bearing is on.

This could work to find air leaks nearly at an pipe line? With medium pressure, about 120 psi.

Yes. I use it also to find vacuum leaks

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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52500 Mechanic’s Stethoscope

Product ID: 2320579

Details

Brand
Lisle
Color
Factory
Exterior Finish
Stainless
Material
Stainless
Product Dimensions
14"L x 5"W

📏Compact 14" length for hard-to-reach areas

🔊Super thin diaphragm for crystal-clear sound

🛠️Pinpoints engine & transmission noise sources fast

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NZ$83

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Hear what others miss — the mechanic’s secret weapon!

ERGONOMIC HOLLOW TUBE - Effortlessly access tight spots without strain or guesswork.
AMPLIFIED SOUND CHAMBER - Unique design boosts faint noises so you never miss a clue.
PRECISION NOISE DETECTION - Zero in on engine, transmission, and bearing sounds with unmatched clarity.
LIFETIME WARRANTY ASSURANCE - Invest confidently with Lisle’s limited lifetime warranty backing your tool.
DURABLE STAINLESS STEEL BUILD - Rugged, professional-grade finish built to last through every job.

The Lisle 52500 Mechanic’s Stethoscope is a precision diagnostic tool featuring a super thin diaphragm and unique sound chamber to amplify engine and transmission noises. Its compact 14-inch hollow tube design allows easy access to hard-to-reach areas, all housed in durable stainless steel. Trusted by professionals and backed by a limited lifetime warranty, it’s engineered to quickly pinpoint mechanical issues with clarity and confidence.

Specifications

ASIN	B0002SQYSM
Brand Name	Lisle
Color	Factory
Customer Reviews	4.6 4.6 out of 5 stars (1,565)
Exterior Finish	Stainless Steel
Global Trade Identification Number	00083045525004
Included Components	Manufactuered Brand Product
Is Electric	No
Item Dimensions L x W	14"L x 5"W
Item Type Name	Tools
Item Weight	0.11 Pounds
Manufacturer	Lisle
Manufacturer Contact Information	Lisle Corporation
Material	Stainless Steel
Model Name	52500
Model Number	52500
Part Number	52500
UPC	083045525004
Unit Count	1.0 Count
Warranty Description	Limited Lifetime

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TrustScore 4.5 | 7,300+ reviews

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