Best Bore Gauges of 2025

Brian Howie Avatar
Brian Howie
Last Updated: Jan 7, 2025

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Bore gauges are precision measuring tools used to measure the internal diameter of a hole or cylinder. They are commonly used in manufacturing and engineering industries to ensure the accuracy of machined parts. Bore gauges come in different types, including dial bore gauges, digital bore gauges, and telescoping bore gauges. They have a wide range of applications and are used to measure the bores of cylinders, pipes, and other cylindrical objects. Bore gauges are highly accurate and provide reliable measurements, making them an essential tool for any professional who requires precise measurements.

At a Glance: Our Top Picks

Fowler Cylinder Dial Bore Gage with 6" Range Cover #TOP 1
Fowler Cylinder Dial Bore Gage with 6" Range
ftb score rating icon 9.9
Neoteck Bore Gage Set Cover #TOP 2
Neoteck Bore Gage Set
ftb score rating icon 9.8
ALLmeter Digital Dial Bore Gage Set Cover #TOP 3
ALLmeter Digital Dial Bore Gage Set
ftb score rating icon 9.6

Top 10 Bore Gauges

#TOP 1

Fowler Cylinder Dial Bore Gage with 6" Range

52-646-300-0
Fowler Cylinder Dial Bore Gage with 6" Range Cover
Fowler 52-646-300-0, Cylinder Dial Bore Gage with 6" Measuring Range

The Fowler Cylinder Dial Bore Gage is an accurate and user-friendly tool for measuring hole diameters and detecting geometry abnormalities. It features a dial indicator with a graduation of 0.0005" and a measuring depth of 9.5", self-centering design, carbide-tipped anvil contact points for extended wear and improved abrasion resistance, insulated grip for easier measuring, and a spring-loaded centralizing foot. The gage comes in a shop-hardened case for easy storage and transport.

What We Like
Accurate measurements with 0.0005" graduation
Extended 2-6" range with carbide-tipped anvil contact points
Self-centering design for fast and accurate measurements
#TOP 2

Neoteck Bore Gage Set

NTK167
Silver
Neoteck Bore Gage Set Cover
Neoteck Bore Gauge Set Digital Indicator Dial Bore Gauge (2-6"/0.0005") Measurement with Self-Centering Dial, Carbide Anvils,and Insulated Grips for Deep Engine Cylinder Measurement-Silver

The Neoteck Bore Gage Set is a professional and durable tool for measuring the inner hole size of various processing techniques. It comes with an accurate digital indicator that allows for precise measurements with a diameter range of 0 ~ 12.7 MM (0 ~ 0.5 inch) and a resolution of 0.01 MM (0.0005 inch). The self-centering feature ensures fast and accurate measurements, while the insulated grip provides comfort and ease of use. The bore gauge set also includes a complete set of measuring accessories, a measuring rod, and different specifications of gauges, making it ideal for deep engine cylinder measurement. With its durable construction and user-friendly design, the Neoteck Bore Gage Set is a reliable tool for professionals and DIY enthusiasts alike.

What We Like
Accurate digital indicator
Precise measurements
Self-centering for fast and accurate measurements
#TOP 3

ALLmeter Digital Dial Bore Gage Set

ALL024
ALLmeter Digital Dial Bore Gage Set Cover
ALLmeter Bore Gauge Set,2-6 Inch(50-160mm) Digital Indicator Dial Bore Gauge 0.01mm (0.0005 Inch),Internal Cylinder Measuring Tool with 12 Probes and Measuring Rod for Engine Cylinders and Deep Holes

ALLmeter Bore Gage Set offers effortless measurements by simplifying the process without disassembling parts. Its versatility in measurement, ranging from 50mm to 160mm, ensures accuracy for various applications. The unrivaled precision of the two-point contact system guarantees accurate results by identifying geometric diameter issues. The comprehensive kit, complete with 12 standard measuring heads and organized storage, ensures convenience and accessibility for all your internal diameter measurement needs.

What We Like
Effortless measurements
Versatility in measurement
Unrivaled precision
#TOP 4

Accusize Industrial Tools Dial Bore Gauge Set, Ee20-1406

EE20-1406
1.4 inch to 4 inch
Accusize Industrial Tools Dial Bore Gauge Set, Ee20-1406 Cover
Accusize Industrial Tools Dial Bore Gauge Set, 1.4-6 inch Measuring Range, 0.0005'' Graduation Interval, Ee20-1406

Introducing the Accusize Dial Bore Gauge Set, Ee20-1406. This high-quality bore gauge set is a must-have for any professional or DIY enthusiast. With its carbide-tipped contact points, it offers extended wear and improved abrasion resistance, ensuring long-lasting performance. The measuring range of 1.4-6 inches and a graduation of 0.0005 inch with a tolerance marker on the indicator provide precise and accurate measurements. The easily adjustable bezel lock allows for zero setting, making it convenient to use. The self-centering measuring heads and chrome-plated handle further enhance its usability. This set also includes an extension holder and a good quality fitted case for easy storage and transportation. Upgrade your precision measuring tools with the Accusize Dial Bore Gauge Set and experience the convenience and accuracy it brings to your work.

What We Like
Carbide-tipped contact points
Precise and accurate measurements
Easily adjustable with bezel lock
#TOP 5

Neoteck Digital Dial Bore Gauge Set

NTK211-US
Silver
Neoteck Digital Dial Bore Gauge Set Cover
Neoteck Digital Dial Indicator Bore Gauge with 0.7"-6"/0.0005" Measuring Range and 6" Measuring Depth Dial Bore Gauge Set with 23PCS Anvils for Engine Cylinder Measurement

The Neoteck Dial Bore Gauge is designed for precise measurements, offering a range from 0.7" to 6" and an impressive accuracy of 0.0005". This tool features two measuring rods, allowing you to easily switch between different measurement ranges based on your project needs. The large LCD display ensures you can clearly see the measurements, reducing the chances of errors in reading. Additionally, with 23 standard anvils included, you can tackle various inner diameter measurements, making this set versatile and convenient for engine cylinder measurements and other applications.

What We Like
Ultra-precise measurements
Large LCD display
Versatile with 23 anvils
Two measuring rods
Complete toolbox included
#TOP 6

Fowler Extender Dial Bore Gage Kit

52-646-400-0
1.4" to 6"
Fowler Extender Dial Bore Gage Kit Cover
Fowler 52-646-400-0 , Extender Dial Bore Gage Kit with 1.4-6" Measuring Range

The Fowler Extender Dial Bore Gage Kit allows you to make accurate measurements with its dial indicator having graduations of 0.0005". It has an extended range of 1.4-6" and a two-point contact system that detects abnormalities such as ovality and taper. The self-centering feature ensures fast and accurate measurements. The insulated grip and chrome plated handle make it easy to use, and the set includes two self-centering measuring heads, extension holder, spacers, and a fitted case.

What We Like
Accurate measurements with a dial indicator having graduations of 0.0005".
Extended range of 1.4-6" with carbide-tipped anvil contact points for improved abrasion resistance.
Self-centering feature ensures fast and accurate measurements.
#TOP 7

Accusize 2-6" Dial Bore Gauge Set

EE20-1006
2-6" x 0.0001"
Accusize 2-6" Dial Bore Gauge Set Cover
Accusize Industrial Tools 2-6 inch by 0.0001'' Dial Bore Gauge Set, 6'' Stem Length, Ee20-1006

Accusize Bore Gauge Set is a versatile tool that comes with an extension holder and a fitted case for easy storage. The chrome plated handle is easily adjustable, providing convenience during measurements. With an insulated grip and self-centering feature, this gauge ensures accurate readings within the range of 2 to 6 inches. The 6-inch stem length allows for precise measurements with a graduation of 0.0001 inches and an impressive accuracy of +/-0.0004 inches, giving you reliable results every time you use it.

What We Like
Versatile tool
Easily adjustable handle
Accurate readings
#TOP 8

LLDSIMEX 2" - 6" Bore Gauge Set

110-015
LLDSIMEX 2" - 6" Bore Gauge Set Cover
LLDSIMEX 2" - 6" Bore Gauge 0.0005" Increment Set

The LLDSIMEX 2" - 6" Bore Gauge Set is a versatile tool that allows you to accurately measure the diameter and depth of bores ranging from 2 to 6 inches. With its 3pc washers and 11 pc Anvils, this set provides you with the flexibility to measure various bore sizes. The self-centering measuring heads, chrome plated handle, and included extension holder ensure precise and easy measurements. The good quality fitted case keeps all the components organized and protected. Whether you are working on automotive engines or industrial machinery, this LLDSIMEX Bore Gauge Set is a reliable and convenient tool that will help you achieve accurate measurements with ease.

What We Like
Versatile
Precise
Includes extension holder
#TOP 9

Mitutoyo 155-903 Telescoping Gage Set

155-903
6 to 7.9 Inches
Mitutoyo 155-903 Telescoping Gage Set Cover
Mitutoyo 155-903, 5/16" to 6", 6 piece Telescoping Gage Set

The Mitutoyo 155-903 Telescoping Gage Set is a versatile tool designed for measuring bores. With its hardened measuring faces, you can trust the accuracy and durability of this gage set. The satin chrome finish not only adds a sleek look but also provides resistance against corrosion. The knurled handle clamp rod ensures a secure grip, allowing you to easily adjust the telescoping gages to fit different bore sizes. Whether you're working in a professional setting or tackling a DIY project, this gage set will provide the convenience and precision you need. The Mitutoyo 155-903 Telescoping Gage Set comes in a fitted plastic pouch, making it easy to store and transport.

What We Like
Accurate and durable
Corrosion-resistant satin chrome finish
Secure grip with knurled handle clamp rod
#TOP 10

HFS Dial Indicator Bore Gage

HFS
16242
2"-6" range
HFS Dial Indicator Bore Gage Cover
HFS(R) Dial Indicator Bore Gage Set - 0.0005" Graduation (2"-6" Range)

The HFS Dial Indicator Bore Gage features a diameter range of 2.000"-6.000", 0.0005" graduation, and 6" depth. With 12 PCS anvils, it allows for bore diameter measurement as deep as 10". The dial gage contains jeweled bearings for accuracy. It includes all necessary spacers, interchangeable extensions, and an ABS storage case. This bore gage is an industrial professional high precision tool that enables users to measure the out-of-roundness and taper of cylinders without removing pistons, reaching the critical wear area of the cylinder.

What We Like
Includes all necessary spacers, interchangeable extensions, and ABS storage case
Allows measurement of bore diameter as deep as 10"
Dial gage contains jeweled bearings for accuracy
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a bore gauge used for?

A bore gauge is used to measure the internal diameters of bores or holes. It is commonly used in equipment maintenance to check for wear and determine when parts need to be replaced.

2. Are bore gauges accurate?

Bore gauges can provide accurate measurements. When properly set using a ring gauge, a dial bore gauge can have an overall accuracy within 0.0001 inches or 0.00254 millimeters.

3. How do I know my bore size?

To determine the bore size, you can use a micrometer and a telescoping gauge to transfer the inside diameter of the cylinder to the micrometer for measurement. Alternatively, you can use a bore gauge, which is a spring-loaded tool designed specifically for measuring bore sizes quickly and accurately.

4. What tool is used to measure bore?

A telescopic bore gauge is commonly used to measure the internal diameter of a bore. It consists of a handle, two telescopic rods, and a locking screw. The gauge is controlled by a knurled knob or small handle to expand the telescopic rods for measurement.

5. Is a bigger bore size better?

In terms of engine performance, a larger bore size can allow for larger intake and exhaust valves, enabling more air to flow through and potentially increasing power output. A bigger bore provides more space for improved airflow.

6. Does bore size matter?

Bore size matters in terms of fitting wheels to vehicles. Aftermarket specialists often make their bores as large as possible to accommodate a wide range of vehicles. A larger bore can be fitted to a smaller hub, but a larger hub cannot be used with smaller bores.

7. What is the quickest tool to measure a cylinder bore?

The quickest tool to measure a cylinder bore is a cylinder bore gauge. It consists of a long shaft with a dial indicator on top and a measuring head on the bottom. The gauge uses a two-point measuring system to provide fast and accurate measurements of cylindrical bores.

Editor's Notes

During our bore gauge research, we found 24 bore gauge products and shortlisted 10 quality products. We collected and analyzed 9,135 customer reviews through our big data system to write the bore gauges list. We found that most customers choose bore gauges with an average price of $55.74.

The bore gauges are available for purchase. We have researched hundreds of brands and picked the top brands of bore gauges, including Fowler, Neoteck, ALLmeter, Accusize Industrial Tools, LLDSIMEX. The seller of top 1 product has received honest feedback from 173 consumers with an average rating of 4.1.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.