If your car engine doesn’t perform efficiently like it used to, then it might be time for a replacement. But before you go ahead, it is important to know the exact measurements of your engine components.
This is easy to do with the help of a handy tool known as a bore gauge. And if you’re not familiar with it, you can picture it as a device that measures the depth of the bore and its diameter. As only the good bore gauges can give you the desired result, we’ve compiled a list accordingly.
You can employ this high-performance tool to your engine’s cylinder to get its exact bore size, taper, and out-of-round measurements.
Best Bore Gauge Comparison 2020
Last update on 2020-10-24 / Affiliate links / Images from Amazon Product Advertising API
Benefits of a Bore Gauge
This high-precision tool has a lot of applications. Usually, it is used for measuring car cylinders when looking for replacement parts. With this, you can surely get the exact measurements compared to traditional methods.
This device is versatile enough that you can use it to measure the taper of the cylinder and know whether it’s wider at the top or the bottom.
The out-of-round measurements can also be determined to know if the cylinder is perfectly round or if it is oval-shaped. Also, it can measure the exact size of the outer diameter of the hole.
Most vehicles today have very tight allowable clearances, so there shouldn’t be even slight errors in the dimensions of your replacement parts. They might go to waste if there is an offset in the size of the parts you buy. With a bore gauge, you are sure to get more accurate data.
This device usually comes in a compact size as well as different forms– analog gauge or a digital gauge. Analog gauges are easy to read, but if you don’t like having to look at the dial indicator, then you can always go for the digital. Well, it all depends upon your preference!
Top 10 Bore Gauge Reviews 2020
It may be challenging to make the right decision, especially if there are so many gauges to choose from. With this guide, you are ensured that all the products on the list are top-notch. Let’s begin!
iGaging Dial Bore Gauge Deep Out of Round Cylinder Measurement
This gauge stands out from the rest because of its super-precise measurements. You’re sure to get all the dimensions on point when you’re using this. It’s also very easy to use.
It can be utilized to measure the taper, out-of-round, and bore size of your cylinder. And the best thing is you won’t even have to remove the pistons while measuring. This is because of its high gauging depth of up to 10 inches. You can even go as far as reaching the cylinder’s critical wear area.
The dial face is composed of 0.0005-inch graduations for optimum precision. It can also measure diameters with a range of 1.4 to 6 inches. Much more, its contact point can be interchanged.
Also, it has a dial indicator that holds jeweled bearings. This adds to its overall measuring accuracy. It is also very small in size and is lightweight, so it only experiences minimal friction. This also means that there is no need to apply lubrication even in corrosive environments.
With its high precision measuring capability, you’ll be surprised to know that it comes at a very affordable price compared to other products on the market. It’s definitely the right bore gauge for your money!
Related Guide: Concentricity Gauge Review
Fowler 52-646-300-0 Cylinder Dial Bore Gage with Carbide anvils
If you’re looking for a bore gauge with the highest accuracy, this device from Fowler may be a good choice. Aside from that, it also boasts of its high durability and user-friendliness.
With this, you can measure the depth of up to 6 inches without the need for an extension. It also comes with a space at the bottom for an extension holder. Well, it is great for measuring tapers and out-of-round of cylinders.
Since this device uses anvils that are made of carbide, it provides more protection from wear. This makes it durable enough to stand for a longer period. It can also maximize the accuracy of your measurements because it can detect pressure even in the smaller areas.
The dial face has a graduation of .0005 inch. When put to the test in measuring hollow cylinders, the accuracy was on point. More amazingly, it is also very easy to use.
It provides a comfortable grip and is very lightweight so you can obtain maximum convenience and ease of bringing it in your workplace. Not only that, but it also comes with a spring-loaded centralizing foot that helps the gauge remain in the center.
Fowler X-tender-E Electronic Dial Bore Gage Gauge Set
This bore gauge is one of Fowler’s best products for many reasons. It is a high-precision gauge, and it’s also very easy to use because it has a digital display. This is perfect if you’re not into analog gauges.
With a measuring gauge of 1.4 to 6 inches, it can measure large holes and cylinders. Not to mention, this is also ideal in measuring the depth of up to 10 inches. Much more, the gradient spacing it uses for measuring is 0.00005 inches.
Since it is an electric bore gauge, you can choose a variety of units of measurement, either in inches or in terms of the metric system, whichever you are comfortable with.To detect if the cylinder has an oval or circular shape, it provides a two-point contact feature. This can also be used to determine other shape irregularities for the taper.
The contact points use carbide for wear protection and for enhancing its resistance to abrasion. It also has a locking feature to keep the gauge stable while you’re trying to insert it to the part you want to measure.
Related Review: Omega 300 vs. Silencerco Hybrid
Accusize Industrial Tools Bore Gage
The next one on our list is known to have high accuracy that makes it suitable for various industrial applications. Aside from accuracy, it has wide measurement ranges so you can measure bores and cylinders of slightly larger sizes.
It is very easy to use, and it already includes an extension holder in case you want to measure a cylinder with greater depth. Much more, this comes with a fitted case to ensure that the instrument is organized and safely stored. Also, it allows you to carry it anytime and anywhere.
Graduations on the dial are as small as 0.01mm to ensure minimal errors in your measurements. It also has a strong carbide tip that increases its resistance to wear and keeps it safe from abrasion. The contact point is made with a stainless steel ball for better durability.
It is very easy to adjust and has a tight gripping handle, so you’re safe from any slips. Considering all of its features, this tool is undeniably a must-have!
Mitutoyo 511-932 Dial Bore Gauge
This device from Mitutoyo has everything you will need from a bore gauge. It can give you highly precise measurements so you can make sure all the replacement parts you’ll buy will fit perfectly well and not end up going to waste.
All the measurements you’ll be getting are sure to be accurate by 0.0008 inches and have a precision of 0.0001 inches to ensure minimal errors. Well, this has a very high accuracy rating compared to other tools in the market.
You will be able to measure bore depths ranging from 0.7 inches up to 6 inches, just perfect for measuring your cylinder’s taper. It also comes with a contact system that uses two points to detect any shape irregularities for the cylinder. Besides, not all of them come in perfect circles as some have oval shapes.
The contact points of the gauge are covered with a carbide coating to give it a greater resistance against wear. Not to mention, this also helps to keep it safe from abrasion. Much more, it comes with a sturdy cover, thereby adding to its durability.
Anytime Tools Dial Bore Gauge
Known for its precision and durable components, you will never go wrong with choosing this bore gauge. It also has other features that make it easier to use. With this, you’ll be sure to get all your cylinder measurements right every time.
You can measure a pretty deep bore of up to 10 inches in depth. That’s far more than how deep other gauges can reach. It can also measure huge bore diameters ranging from 0.7 inches up to 6 inches.
The graduations on the dial face are by 0.0005 inches to enhance the accuracy of your measurements and lessen any chances of slight offset errors. Its measuring plunger has a carbide tip, and this gives it more resistance to wear and enhances its protection against abrasion.
There are also jewel bearings inside the dial indicator. With this, you are ensured of an accurate, lightweight, and compact device. This will surely give you an optimum experience when using the gauge. Also, it only has very minimal influences of frictional force, which can affect the precision of your measurements.
So you won’t have to remove the piston while measuring. Beyond doubt, this is perfect for measuring taper and out-of-round of cylinders.
Accusize Industrial Tools Toolmaker Inspection Set
Another great addition we have for this list is the high precision inspection set from Accusize Industrial. It has all the tools you will need for measuring bores easily with higher accuracy. And it includes a micrometer set, dial bore gauge set, a telescoping gauge set, and a set for measuring small holes.
There are six available tools you can choose from its micrometer set. All these micrometers have easy to read graduations of 0.0001 inch. This very small graduation gives your measurements better accuracy. Each of them is hardened and comes with a carbide anvil, thereby ensuring durability.
The micrometers are very useful when it comes to measuring the thickness and length of very small objects. This product can measure bores of up to 6 inches in depth. They are also easy to adjust and have an insulated grip.
You can use the telescoping gauge set for measuring the internal dimensions of a bore. It includes 6 pieces of tools that can measure with different ranges. Not to mention, they are all durable and have a rigid handle.
So, if you’re looking for a product that can provide you with the utmost functionality, this set may be a good choice!
Fowler Dial Bore Gage Set, 52-646-400
With its high accuracy and its durability, you will be sure to get the best value for your money. This gauge set is complete with unique features to help you measure bores and cylinders easier.
For added accuracy, the gauge is designed to have a graduation of 0.005 inches, and it has a marker for tolerance on the indicator. It also can measure a hole that goes as deep as 6 inches.
The contact points have carbide tips to ensure more strength and higher resistance to the wear and tear of frequent use. Also, this can help minimize the effects of abrasion.
It has a two-point contact system that can detect if the shape of the cylinder is not perfectly round. And it has an integrated bezel lock that is easily adjustable for zero settings.
The heads are built to be self-centering for reliability. With the features this gauge has, you won’t have to look any further.
Mitutoyo 155-904, 1/2″ to 6″, 5 Piece Telescoping Gage Set
Unlike other products on this list, this set only consists of telescopic gauges, and is perfect for measuring the diameter of cylinders and other bores. It comes with five telescopic gauges that range from 0.5 inches up to 6 inches.
This can effectively measure the inner diameter of holes from smaller to larger sizes. Its spring-loaded plunger makes it possible for it to expand inside the bore.
Each of the gauges has a knurled clamp for a more secure grip. They also come in a neat chrome satin finish for added durability. And it’s also hardened to resist wear due to frequent use so you can use it for a longer period.
This has a very affordable price range, so you won’t have to worry about going over the budget.
Starrett 3089Z-131-26J Dial Bore Gage
This highly accurate gauge is one of the best choices you can go for in the market. Its manufacturer is well known for its high-quality gauges, and it certainly did not disappoint with this one.
Bores and cylinder can be measured up to a depth of 6 inches. This large depth measurement range is very useful when determining the length of the cylinder’s taper and its out-of-round.
Its 2-point contacts are made more durable using carbide so it can handle the wear from frequent usage. This also comes with an aluminum case so you can keep your gauge and all your other accessories safely.
All the anvils are marked with a laser so you can easily select the one you need. Aside from that, there is a gage chart to guide you with your anvil selection.
For sure accurate measurements, the graduation is set at 0.0005 inches. Also, this is lightweight and also comes with a secure grip. Without a doubt, this is a good option!
Features to Look for Before Buying
Precise measurement is a non-negotiable factor when it comes to bore gauges, and slight errors can result in unnecessary damages. Other factors are necessary for a gauge such as durability and measurement range. So, before you go and buy one, make sure you have checked the following features.
This is the most important factor. All your measurements should be accurate, and the gauge you use should be able to do that.
To ensure accuracy, see the graduations used by the gauge. The smaller, the better. It assures that there is very minimal room for error. Well, the standard graduation for most gauges is 0.0005-inch. If your device features such, then it will most likely give you an accurate number.
All cylinders come in plenty of sizes, so your gauge should be able to accommodate most if not all of them. Look for the extent of the diameters it can measure as well as the maximum depth it can reach. A higher depth measurement range is better since you won’t have to look for any extensions.
Although gauges are rarely exposed to large forces, that doesn’t mean they should be built with less durability. Get to know if the gauge has features that help it become resistant to wear or abrasion. This will ensure that it will be able to handle the damage that comes with frequent usage. It will also lengthen its service life.
Choose a gauge that’s lightweight and has a secure grip handle to prevent any slips. Also, look for a device that comes with unique features that promote ease of use.
For instance, opt for one that has an easy to adjust settings. Also, a tool that includes a chart for easy selection can also be chosen. If you don’t like analog displays, you can always opt for an electronic gauge for easier measurement reading.
Frequently Asked Questions
These high precision gauges are specially designed to measure the dimensions of holes. They also come in handy when measuring a cylinder’s out-of-round, taper, and outer diameter.
There are specific instructions in using dial gauges from different manufacturers. But basically, you just zero the gauge, insert it to the bore to a specific depth, and rock it back and forth to insert it to the pipe.
Telescopic gauges have many applications, but it is mainly for measuring the internal diameter of a bore. Not to mention, you can also use it for cylinders.
The general rule for calibrating measuring equipment is to do it at least once a year. However, some manufacturers may have different calibration cycles for their products, so make sure to check the information manual of your device.
This will depend on your preference. Electronic gauges are easier to read in general, but some don’t like the digital interface.
Bore gauges have tons of applications, and to get the best one, you need to check all the features they come with. If you want the bore gauge, then any of the ones on this list is a great choice. Hopefully, you already have one in mind after reading through the pages!