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Top 10 Best Feeler Gauge Review with Buying Guides

If you have a mechanic’s shop where you can find the best feeler gauge. It is a tool widely used in a large number of applications.

In general, different configurations or repairs of machines, engines, and other objects need precise measurements.

That’s why here you can find the ten best tools available for you.

In case you are a beginner user, you will not be overwhelmed with the final decision. So just consider what your needs are to acquire the perfect tool.

Table of Contents

Best Automotive Feeler Gauges

Photo Title Buy
Starrett 66B Thickness...image Starrett 66B Thickness Gage Set With Straight Leaves, 0.0015-0.035"Thickness, 3-1/32" Length, 31 Leaves Price & Details
Stainless Steel Feeler...image Stainless Steel Feeler Gauge Dual Marked Metric and Imperial Gap Measuring Tool (0.04-0.88 mm, 32 Blades) Price & Details
Neoteck 6 inch...image Neoteck 6 inch Digital Caliper and Feeler Gauge Set, Stainless Steel Electronic Vernier Caliper Fractions/inch/Metric Conversion Price & Details
OEMTOOLS 25024 22...image OEMTOOLS 25024 22 Blade Go-No-Go Feeler Gauge | Measure the Gap Between Parts |Great in Engines for Adjusting Tappets, etc. | Great for Machines, Guitars, & More | SAE & Metric Price & Details
Lisle 68100 Deluxe...image Lisle 68100 Deluxe Feeler Gauge, Regular Price & Details
Lang Tools 3079...image Lang Tools 3079 Master Feeler Gauge Set for Heavy-Duty Truck Valve Adjustment Price & Details
Proto J000TL 25...image Proto J000TL 25 Blade Long Feeler Gauge Set (1/2" and 12" blades in steel holder) Price & Details
Mitutoyo 950-251 Thickness...image Mitutoyo 950-251 Thickness Feeler Gage Set, 0.002-0.035" Thickness, Straight 3" Length, 26 Leaves Price & Details
Rannb Metric Feeler...image Rannb Metric Feeler Gauge Gap Measurement Tool 12-inch Long 17 Blades 0.02-1.00mm Thickness Price & Details
Performance Tool W80541...image Performance Tool W80541 20-Piece Blade SAE and Metric 12" Extra Long Feeler Blade Set Price & Details

The 10 Best Feeler Gauge Review 2021

Let’s see then what the best features of each of these tools are.

In just a few steps, you will be able to obtain accurate and perfect thickness measurements. Even the best part is that you need a few dollars to get professional results.

01. Starrett 66B 3-1/32″ Feeler Gauge


One of the first tools that are available in the market is this model that can be very useful. So this set of gauges of different thicknesses allows users to do excellent work.

In particular, it is a tool that can provide you with 31 sheets. At the same time, it is a tool that has been manufactured with high-quality materials.

Tempered Steel

In this case, high quality hardened steel has been used to manufacture each of the blades of this tool. This way, you can count on an excellent level of precision at all times.

Even each blade is marked by the thickness it can offer. So, the work will be much easier when using this set of gauges.

Moreover, each of the blades incorporated here has been effectively tested for a better result. That is why you will be able to enjoy an optimal and exact result according to your needs.

Efficient Design

One of the best advantages of using this type of tool is a simple and quick design. So that any of the sheets incorporated here can be easily replaced if necessary.

In this way, you can avoid the deteriorated sheets from being a waste. Beyond that, the long life of this Armenta offers a reliable and accurate result.

Locking Device

To do a better job, a locking device has been incorporated into the meter. Therefore you will be able to keep one or more blades in one position.

In this way, you will have the facility to work with a good level of comfort. It can even be very useful when making different objects or implements.


  • Poor locking device
  • Replaceable blades
  • High quality hardened steel


  • Leaves can rust

02. Hotop 32 Blades Dual Feeler Gauge


One of the efficient ways to get a good job is to use this set of 32 blades. This simple design can provide users with the results they expect.

In this case, a set of imperial space and metric space measurement tools have been included. So, it will be more than sufficient for a large number of uses.

Excellent Materials

Here you have also incorporated materials of excellent durability and quality. This is a set of 32 blades made of 65 manganese steel.

In particular, it is a design that can be used for all the needs of many users. This tool is very easy to store and transport anywhere.

For this, we must note the efficient and simple design that has been incorporated here.

Quick Identification

To quickly identify the thickness you need, the exact measurement of each option has been incorporated.

So, the thickness starts at 0.04 millimeters and goes up to 0.88 mm. In the same way, you can count on 0.0015 inches up to 0.035 inches.

Particularly, this is a metric and Imperial double marking system. Even this is more than enough to return a lot of jobs easily.

Anti-oxidant Effect

Anti-rust oil has been incorporated here to prevent rust from being a problem in this tool.

So, each of the 32 blades incorporated here will be kept in excellent shape. In particular, it is a very easy and quick tool to use by any user.

Also, the cost/benefit ratio can be adapted to the needs and budget of many people.


  • Quick and easy design
  • Anti-oxidant effect
  • Metric and imperial measurements


  • Not the best of its kind

03. Neoteck Stainless Steel Feeler Gauge Set


Getting a good result means having excellent tools. That’s why this option gives you a measuring range of 150 mm or 6 inches.

In turn, both the accuracy and resolution are of excellent level. In combination with this, you will also have a mini-screwdriver and a feeler gauge.

So this stainless steel digital gauge is for all types of users.

LCD Display

In case you want to get the most accurate results, you can use this LCD.

In this case, it is an LCD screen with excellent size for much easier and faster reading. Even this electronic device supports fraction, metric, and inch conversion.

Even the zero adjustments can be set from any position. That is why it is one of the most valued tools among those available in the market.

Level of Versatility

Here we should mention that you will not need much budget for this tool.

Even this set of parts will be very useful for different measurements in outdoor and indoor environments. You also can measure depth.

As if that were not enough, it is also possible to measure the probe and the pitch when you use two sets of jaws.

High-level Features

You will notice that hardened, tempered steel has been used here to manufacture these components.

Even you will not have to worry about corrosion or pitting thanks to the lubricating oil coating. Of course, this means a much longer service life without the problem of rust on your tools.

So, you only have to worry about getting professional-level results.


  • Stainless steel materials
  • LCD screen
  • Excellent time of use


  • Intermediate measuring range

04. OemTools 25024 Multi-purpose Feeler Gauge


In particular, novice users want a tool that is easy to use.

In this case, we can recommend this piece of 22 sheets and efficient features. We can start by mentioning that each of the measurements you make will be very easy and fast.

We have even used the make to engrave each sheet with millimeters and inches.

High-quality Parts

Here you will find a 22-leaf piece that has been built with materials of excellent durability.

So, with proper care, you will be able to use this thickness gauge for a long time. In particular, here, we have used hardened and tempered steel to optimize durability.

Additionally, you can use this option in a large number of implements.

So this means that you can count on assured high precision measurements. That’s why it’s one of the best investments for a lot of machines, engines, guitars, and whatever you want to measure.

Guaranteed Durability

In particular, the manufacturer has designed this tool to provide excellent service life.

It is even easy to notice that the design of this tool is compact and convenient to transport anywhere. So you don’t have to worry about having too much space between your equipment.

Simple Blade Replacement

Whenever necessary, you can remove any of the sheets included here.

For them, you only have to use the thumb notch of the protector. If any of these blades are damaged or bent, you can count on the appropriate replacement.

This way, you can apply the perfect maintenance to keep your tool in optimal conditions.


  • Easy to use design
  • Fast measurements
  • Hardened and tempered steel


  • Without anti-rust treatment

05. Lisle 68100 Deluxe Feeler Gauge Set


In general, novice users do not need to have a large number of sheets in this tool.

So here are 31 blades with different thicknesses that you can use. You will only need a few dollars here to get all the measurements you want.

This way, you can optimize a large number of machines and objects.

High-quality Tool

In particular, we can mention that here excellent material has been used in manufacturing.

It is hardened and tempered steel that can withstand a lot of uses for a long time. Besides, we can add that the design of this tool is very easy and compact to use anywhere.

Quick Blade Replacement

As with the best tools, this thickness gauge also offers a simple design. This means that you only have a few minutes to change a sheet.

This is a highly convenient design that will prevent you from wasting too much time. In case a blade is damaged, you do not need to buy a new tool.

Proper Thickness Range

When we analyze this thickness gauge, we can notice that the measurements are similar to other tools.

You can make measurements in inches as well as in millimeters. So you can measure between 38 mm and 889 mm. In this same sense, you can measure 0.0015 inches or 0.035 inches.


  • The measurement range is acceptable
  • Compact and convenient design
  • Hardened steel


  • Regular life span

06. Lang Tools 3079 Master Feeler Gauge Set


For those who must apply adjustments to truck valves, this set of thickness gauges is available.

It is a set of pieces that manage to cover a great variety of thicknesses. In particular, this can be very useful for those people who must apply a heavy service with their trucks.

Therefore, this option could be the most suitable for you.

Excellent Thickness Range

As we have mentioned here, the range of each thickness covers a wide variety of uses.

Each of them covers 0.008 inches to 0.030 inches. So these applications are really useful for the engines of many trucks.

Therefore, you will have the ability to supplement your existing tools with these versatile use thickness gauges.

Efficient Design

A high-quality design has been incorporated to provide efficient results at any time.

To begin with, a blue color code has been incorporated into the double-ended plastic handle. Thus, the blue color is for the inlet while the red color is for the outlet.

This way, you will have the possibility to continue working without wasting too much time.

Ideal for Professionals

Each of the tools here includes can be used for different heavy-duty truck valve settings.

In particular, the main options here are Detroit Diesel and Cummins. On the other hand, we must consider that these tools have been manufactured with excellent quality steel.

They have even been manufactured in the United States, which gives users greater confidence.


  • Quality from the United States
  • Color Coding
  • Efficient thickness gauges for trucks


  • Not very useful for novice users

07. Proto J000TL 25 Blade Long Feeler Gauge Set


When we continue to investigate the excellent options, we can analyze this set of thickness gauges.

In particular, each of these sheets has an excellent length. So, you will be able to access a lot of places that are not very accessible.

Also, this set of pieces can offer 25 blades manufactured with high quality.

Excellent Quality

In principle, high-quality steel has been used to manufacture these parts. Here it is fair to mention that this is high carbon steel.

In particular, this provides a higher level of durability and strength. This means that you can enjoy a long service life.

Even though an anti-rust treatment is not included here, the truth is that it is a very convenient tool.

Convenient Design

As mentioned, each of the sheets incorporated here offers the length you need. Besides, each of these blades has been laser engraved.

Therefore, you will be able to appreciate the thickness in inches and millimeters. Even the decimal size will allow you to choose the exact blade for the right moment.

So this is a very convenient set of thickness gauges.

High-value Tool

In principle, it is necessary to mention that this tool also offers a convenient sheet replacement system.

So when one of the blades of this tool is very worn out, you can replace it. This way, you will always have a tool in perfect condition.

Finally, we should mention that the excellent quality of this tool comes from the United States.


  • Excellent measurement range
  • High carbon steel
  • Leaves with excellent length


  • Less convenient to transport

08. Mitutoyo 950-251 Thickness Feeler Gage Set


Here we can name another reliable brand that provides a length of 3 inches.

In particular, you can count on a thickness range of 0.002 inches to 0.035 inches.

In other words, the length of 3 inches and this measurement range can be more than sufficient for a large number of applications.

26 Sheets

In this tool, 26 sheets have been incorporated that you can use in different applications.

So if you have to work with engines or guitars, you will be able to apply for really precise work. We can even mention that this toolset has been manufactured with an efficient and easy to use design.

So it is a perfect feature for beginner users.

High Durability

Especially another very important feature you should consider is the high quality of the materials.

Here we have used steel of excellent resistance to offer a great useful life. In particular, the problem is not rust, so you only have to worry about working.

This tool can be very convenient to use anywhere.

Efficient System

Once again, we can mention that the sheet replacement system is very easy to use.

You need a few seconds to replace the leaves that are damaged over time. Along with this here, we have used lasers to engrave the measurements in inches and mm.

In other words, it is a tool with acceptable features combined with affordable cost.


  • Locking Clamp
  • Acceptable thickness range
  • Highly durable steel


  • Average length

09. Rannb 12 inch Feeler Gauge


In case you need sheets with an excellent length, you can count on this tool.

In particular, each of the 17 blades included here can offer 11.8 inches of length. So this length can be more than enough to reach a lot of places that are not very accessible.

So, it is certainly one of the preferred tools for working on engines.

High Level of Resistance

In principle, hardened and tempered steel has been used here to provide a high level of durability.

The necessary treatment to prevent corrosion and pitting is also incorporated. In particular, this is a layer of lubricating oil that is complemented by the hardened steel.

So you only have to worry about getting professional results with your tool.

Easy Identification

To easily identify each of these sheets, lasers have been used.

That is why you will notice the right thickness on each of these sheets. Besides, it is important to consider that storage is very simple when you finish working.

So it is a tool that is made to make your life easier.

High-level Features

Particularly, you can count on a range of thicknesses between 0.02 mm and 1.00 mm.

In this case, people who work with motors can take advantage of each of these sheets that have been included here. More precisely, these sheets can be useful in an electronic ignition system.

Some users need to measure the air space of the reducer of this system.


  • 11.8 inches long
  • Excellent resistance steel
  • Built-in anti-corrosion treatment


  • Only 17 sheets

10. Performance Tool W80541 Extra Long Feeler Gauge


Last but not least, here, we can present one of the complete tools for the vast majority of users.

In principle, it is a set of 20 sheets that you can use for a large number of applications. Additionally, we can include that the length of each sheet is 12 inches.

Excellent Materials

To offer long life, this tool is made of high-durability steel. So you can use this blade set in a professional environment such as a machine shop.

Here the intensive use of this tool will not be a problem. So it is also a perfect choice for beginners.

Quick Identification

Once again, lasers have been used for engraving the thickness of each of these sheets. This is a permanent engraving to allow you to save working time.

Even using this tool is not only fast but also very simple. In this sense, we must mention that each of these sheets is very flexible and convenient to use in many spaces.

Efficient Replacement System

On top of that, an excellent design has been incorporated here to replace any blade.

This way, you will be able to apply the perfect maintenance to this tool. You will be able to count on a range between 002 and 040.

Each of these 20 blades is more than enough to cover each of your next needs.


  • High-quality materials
  • Length 12 inches
  • Laser engraving


  • Uncomfortable to transport

How to Buy the Best Feeler Gauge

You will be able to choose the precise thickness gauge set with the appropriate information.

To do this, we must name some important aspects of each option. In particular, you do not need the same features if you are a beginner user, as if you are a professional user.

So the following information could facilitate the final decision.

Level of Accuracy

Of course, the first characteristic we must consider is accuracy. It is a tool used to know the most appropriate accuracy.

Here you can have different systems of units. In particular, most tools offer thickness in inches and millimeters.

So, this could make it easier to have the appropriate accuracy. If you want to prevent your tool from losing accuracy, you should consider something important.

Especially these tools are made of metal, such as steel. Therefore, the temperature of this metal should not be raised, as the material can expand.

This could certainly deform your tool.

Quality of Materials

In general, most thickness measurement sets are made of steel.

At best, this steel is hardened and tempered to provide a long service life. So, this feature can be really important to have good use at all times.

Even an anti-rust treatment can complement this durability.

Specifically, a tool without rustproofing can offer a shorter service life. In this case, you should apply lubricating oil to avoid this kind of inconvenience.

If you do not want to go to this trouble, then your tool should be made of stainless steel. Either way, this last option is always much more convenient for you.

Measuring Range

All users need different measurement ranges.

That is why the same measurement range is not always provided in any type of tool. Of course, as these measurement ranges are wider, then it will be more convenient for you.

In other words, you will have a much more versatile tool. This is particularly an important feature for professional users.

Those who work with motors need different measurements and thicknesses.

On the one hand, you should consider the minimum and maximum measurements that each option can offer you. Additionally, the number of built-in blades is also important.

Here we want to have a tool that provides many blades in one set of thickness measurements.


Another aspect that many users value is the length of each sheet of this tool. In particular, this feature allows a user to access a large number of difficult spaces.

This is even a fairly common situation when you need to work with an engine or a complicated area in a vehicle.

In the best cases, you can find blades that provide a length of 12 inches. This may be more than enough when you need excellent length. On average, most blades provide a length of only 3 inches.

So, if you don’t have to use this tool in difficult areas, this length might be more than enough.


First of all, we can mention that an efficient design will allow you an easy replacement for each sheet.

Over the lifespan, the blades of this tool can deteriorate, and the level of accuracy decreases. Therefore, an easy locking system will allow you to remove the blades that are damaged and deteriorated.

In this way, you can keep your tool in perfect condition.

On the other hand, we can include the laser engraving system in the design. In particular, this feature only facilitates the work of measuring thickness.

Here you can find a laser option or the printed option. Of course, laser engraving offers higher durability. So during the work, it will be much easier to read the different thicknesses with this feature.

Best Automotive Feeler Gauges- Crucial FAQ’s

Q: What materials are feeler gauges used?

Ans: Carbon steel is usually used to manufacture a feeler gauge.

In this way, it is possible to obtain excellent durability to provide a long service life. It is even necessary to take into account that this tool is used in different machinery and engines.

Therefore, the level of resistance and durability is an important aspect.

In particular, a feeler gauge is often included during a repair or configuration of mechanical parts of a vehicle or machine. If another material is used, then the tool could easily break.

Q: What is the best feeler gauge set?

Ans: In particular, it is a tool that can offer different sheets that are used to make thickness measurements. So this tool is very useful when measuring the width of different spaces.

Sometimes it is necessary to measure the gap between two parts of a machine or an object. This is a common situation in engineering. It also happens when repairing the mechanics of an engine or a vehicle.

Q: What do the numbers on a feeler gauge mean?

Ans: In general, the numbers on a feeler gauge indicate how many sheets the tool has. As the number of blades increases, then it is a much more convenient tool.

Therefore you will be able to get a larger number of measurements. There are also other numbers to consider.

Among the other numbers included in the range of measurements that you can use. So these numbers are shown as inches and millimeters.

Although, a feeler gauge gives you a measurement range that can start at 0.0015 inches to 0.035 inches. Finally, the length of each sheet of the tool is also usually included.

Q: How does a feeler gauge work?

Ans: Here you need a set of thickness measurements to be able to work in really small spaces.

Each of the blades incorporated in this tool can provide you with a specific thickness. You must use one of these thicknesses when working with certain small spaces.

In general, these spaces are less than one millimeter.

Particularly, this type of tool can be used in different applications. Some of the most common examples are an engine, mechanical parts of a vehicle, a machine, musical instruments, and a variety of other options.

When you get the most accurate measurements, you can work more professionally. Even this happens mostly when people have to work with engines.

Q: How do you maintain a feeler gauge?

Ans: Here you should avoid rusting every single blade of this tool. To do this, simply use a cloth and lubricating oil to do a good job.

When you finish working with this tool, you should use this oily cloth and efficiently lubricate the whole structure. Once you have done this, you can store your tool.

It is also recommended that you keep your tool closed when not in use.

Therefore, your tool should only be open if you must use it. In other words, this is one of the main techniques used to optimize the life of the tool. That is why the blades that are outside must be fulfilling a specific purpose.

Q: What are brass feeler gauges for?

Ans: In particular, the design of this tool makes good sense when working in different applications.

In particular, brass is highly effective when you need to work with an air gap. Here most professional users recommend working with a brass blade.

Incorrect use of this tool occurs when you use a ferrous metal. Here simply, the reluctance will work properly as it can be magnetized with ferrous metal.

That’s why beginners should avoid working with this component without proper knowledge.

Final Words

Once you have the best feeler gauge, you will be able to work in a much more appropriate way.

It is a very important tool if you want to make efficient configurations and repairs. Many professional machine shops require at least one of these tools.

So many users who are setting up their workshop should acquire this option immediately. Of course, by considering the information in this review, you will avoid wasting your money on the wrong option.

You will not need a large budget to complement your workshop.

From this point on, you will have the possibility of obtaining better results in your activities. Whether you want to build something or repair an engine, without a doubt, a feeler gauge will be very useful.

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