The Best Digital Calipers for Machinists

The Best Digital Calipers for Machinists

As a machinist, you know that the accuracy of your cuts depends on the precision of your tools. If your tools are not precise, the parts you cut may not fit correctly or work as they should. This could also lead to safety issues while working on your project.

What is the best way to get accurate measurements? One of the most critical instruments you will employ is a caliper as a machinist. When dealing with small measurements, a digital caliper provides reliable readings. The calipers are constructed of durable materials. Additionally, they provide innovative features that assist you in producing high-quality work.

If you’re a machinist, you understand the value of a decent pair of calipers. This blog post will discuss some of the best digital calipers today. Additionally, we’ll discuss why you should consider investing in high-quality digital calipers and how to shop for them. As a result, if you’re looking for a new pair of calipers, keep reading!

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Starrett 798A-6/150 Digital Caliper

Mitutoyo 500-506-10 Absolute Digimatic Caliper

Mahr Federal 4103011 16 ER Digital Caliper

iGaging IP54 Electronic Digital Caliper 0-6″

Top 5 Machinist Digital Calipers Reviews

1. Starrett 798A-6/150 Digital Caliper

The Starrett 798A-6/150 Digital Caliper is a fantastic choice if you want accuracy and durability in one tool at a reasonable price. It is durable stainless steel and has a digital display that makes it simple to read the measurements. Considering that it can measure a range of 0-150mm with an accuracy of 0.01mm, it is quite impressive. In addition, it has a 3.5 mm thick bar and a protective plastic casing, which makes it even more durable than the competition.

The IP67 ratings denote that the measuring tool is resistant to dust, water, and oil, among other elements. It also has a high resistance to coolants. The device is small and lightweight, with a slim and comfortable design to hold it securely. On the LCD screen, you can select between millimeters and inches.

The thumbwheel design allows you to easily adjust it with just one hand, which is convenient. If you are working in a small space, this is extremely convenient. It complies with DIN 62 standards, making it accurate and suitable for all machinists, regardless of their experience or training.


  • It is constructed with a robust design.
  • The tool is resistant to water, oil, and dust.
  • It includes an LCD display for easier reading.
  • The design is of exceptional quality, resulting in precise readings.
  • It features a smooth thumbwheel and can thus be controlled with one hand.
  • It has a straightforward design that emphasizes ease of usage.


  • It is very pricey.

2. Mitutoyo 500-506-10 Absolute Digimatic Caliper

You should consider investing a little more money in a digital caliper if you want a high-quality measuring tool that will last a long time. The stainless steel used in the construction of this tool ensures that it will last for a long time. A resolution of 0.01mm and an accuracy of 0.002 inches allow it to measure between 0 and 600mm with 0.01mm resolution and 0.002-inch accuracy.

This device is adaptable and can be used in various workshop environments, including harsh conditions. It also has a 70mm body length, which makes it convenient to use when measuring large objects. As a result, you can get an accurate score when it matters the most, thanks to the LCD screen on this model, which displays readings in metric units and inches.

This digital caliper will provide you with extremely accurate measurements. It is equipped with a linear encoder, ensuring that the measurements are accurate. Another advantage is that it operates at a low voltage. This means that the battery can last up to 3.5 years if used on a consistent basis. In addition, the battery is durable due to the fact that it is packaged in a plastic case. This caliper can measure various things, such as the diameter of something inside or outside or the depth of something.


  • It is quite versatile in its application.
  • The caliper is constructed of a solid, lasting material.
  • The model produces precise results due to its electrostatic linear encoder.
  • It features a generous length that is ideal for measuring huge spaces.
  • The battery has a long life of around 3.5 years when used regularly.
  • It includes a protective casing and jaws made of hardened steel for added durability.


  • It comes at a higher price than the initial purchase, though it is cost-efficient due to its durability.
  • You might find it a bit heavy.

3. Mahr Federal 4103011 16 ER Digital Caliper

This device is extremely innovative and expensive, but it is well worth the investment. – It has a range of 0 to 6 inches and a resolution of 0.0005 inches, and it measures between 0 and 6 inches. As a result, it is extremely precise, and you will have no difficulties while working.

This digital caliper has a lock feature that maintains the zero position. That means you won’t have to reset it every time you want to take a new measurement. This saves time and makes the process more straightforward.

This model also stands out because of its innovative reference system, which allows you to measure things accurately multiple times without losing accuracy. It is easy to read because its LCD screen displays readings in inches, metric units, and decimals. It is also compact. It is also adaptable in the areas where a variety of professionals can use it. Furthermore, you will be impressed by its ability to withstand adverse conditions and its high precision results.

An electronic measuring tool is a term used to describe this device. You can use it to confidently measure depth, inside and outside spaces, steps, and diameters with this instrument. It is equipped with a long-lasting battery and a protective case.


  • It has many uses.
  • It has a unique reference system for reproducibility.
  • The caliper locks at zero.
  • It has a long-life battery and a casing.
  • This tool comes with three measuring systems.
  • It provides accurate and precise readouts.
  • It has protection against rough working conditions.
  • Apart from the great feel and repeatability, this model features a round depth rod that allows easy depth measurements.


  • It is costly

4. iGaging IP54 Electronic Digital Caliper 0-6″

However, while this model does not compare favorably to the models discussed above, it is an excellent budget-friendly alternative. Because of the incredible functionality of the tool, you receive excellent value for your money. In the first place, you’ll appreciate the sturdy steel construction, which will provide years of service. The IP54 rating, which indicates that it is resistant to dust, water, and oil splashes, is also a plus. That is, it is capable of withstanding the rigors of a workshop.

This tool is well-designed, with no blank space between parts and the handle. Because of their stability, the measuring jaws do not move around a lot. Furthermore, the large display screen makes it simple to read the results of the measurements. The screen is also large enough to allow precise readings, which is particularly useful in awkward or confined spaces.

In addition to having a resolution of 0.0005 inches, the precision of the digital caliper is + or – 0.001 inches, and the repeatability is 0.0005 inches. It is accurate and has a high resolution makes it suitable for professional use, as it offers excellent value for money.


  • It is constructed of stainless steel for added durability.
  • A case protects the tool.
  • Due to the large screen, it is straightforward to operate.
  • It has a great degree of precision.
  • Between components, there is no adhesion.
  • It is available in imperial, metric, and fractional measurements.
  • This digital caliper is protected from debris, oil, water, shocks, and drops.


  • The small depth stick may come loose from the bottom.
  • It has a few durability issues
  • Difficulty in opening the battery compartment.

5. Digital Caliper, EAGems Measuring Tool

Do you have trouble with low-quality measuring tools? Seems digital caliper is designed to solve all the common problems with low-quality measuring tools like weak batteries and rough movement. Plus, it is lightweight and easy to handle, so you can use it without worrying about damaging it. It also has high protection against liquid and dust, so you don’t have to worry about that.

This measuring instrument is constructed entirely of stainless steel and is exceptionally smooth. It has a high accuracy level of 0.0005 inches. This means that it is exact. The device also has a large display screen, making it easy to read measurements correctly. Both beginners and professionals can use it.

This tape measure is beneficial because it shows inches, metric, and SAE decimals readings. It can measure diameters, depths, steps, and inside and outside dimensions. Plus, it turns off and on automatically, which is really helpful.


  • It is built with durable construction.
  • The tool works smoothly with minimal stickiness.
  • It features a wide display and precise readings.
  • It displays inches, metric, and decimal measurements.
  • The instrument can be used to determine diameters, depths, and steps.
  • It is resistant to dust and liquids and is packaged in a red protective case.
  • It is resistant to dust and liquids and is packaged in a red protective case.
  • The tool is backed by a two-year warranty and comes with an owner’s manual.


  • It is a little heavy.
  • It has durability problems.

What Are the Advantages of Digital Calipers?

Digital calipers are used by professionals in many different fields like carpentry, metalworking, and mechanical engineering. They use it to get accurate measurements of a space or object. That is why it is important to have a good quality digital caliper. Here are some benefits of having one.

Ease of Reading Measurements

One great thing about digital calipers is the LCD screen, making it easy to read the measurements. Other calipers require two different scales to get complete reading. Still, digital screens show the whole measurement right on the screen. You don’t need any other tools with digital calipers, making them more convenient. They also automatically collect data, which makes them fast and efficient. Plus, they have large screens that make it easy to see the readouts, which is helpful in tight or awkward spaces.

Accuracy and Precision

The digital calipers are very accurate. They have high resolution and can measure both small and large spaces accurately. They have precise readouts thanks to their feature that allows them to hold firmly on the surface of interest—furthermore, the tools reference measurements to avoid any room for error.


When shopping for workshop tools, durability is paramount. The digital calipers are constructed of stainless steel, which is highly durable. Additionally, they offer protection against dust, liquids, jarring shocks, and falls. They are shock-proof due to the absence of moving parts. Additionally, they include a protective casing for added durability and a replacement long-life battery.

Easy Conversion of Measurements

With the mm/inch button, you can change the reading of distances measured. This can help reduce inaccuracies. You can also use the zero function to automatically calculate between tasks without stressing your brain or using a calculator. Some calipers even have memory cards that you can use to move data with a USB for convenient data analysis.

Quadri Feature

Digital calipers can take four measurements: inside, outside, depth, and step. This means they can be used for measuring both small and large objects.

Furthermore, the Quadri feature makes them versatile in their applications. They can be used by different professionals in various fields such as metalworking, woodworking, engineering, medicine, and many more.


There is a wide range of digital calipers on the market. They have different prices, but you don’t need to spend a lot of money to get a good one. You can find affordable digital calipers if you are on a budget. However, suppose you are willing to pay more. In that case, you can get digital calipers worth the extra money because they are more durable and last longer.

Care and Maintenance Tips Of A Digital Caliper

If you don’t take care of your digital caliper, it can cause inaccuracies in the measurements you take. This could mess up the projects you’re working on. But if you take care of your tools, they will last longer and perform better.

Turning it off and storing it appropriately is critical to properly caring for your digital caliper. If it comes with a protective case, be sure to use it. To ensure optimal performance levels of your digital caliper, follow these best maintenance practices:

Storing in low humidity surrounding

  1. Oiling the shaft lightly and wrapping it in corrosion-free paper.
  2. Use it for the intended purpose
  3. Avoid placing heavy objects on it.
  4. Keep it away from corrosive chemicals and excessive heat.
  5. Regularly inspect the battery to ensure it is operating at peak efficiency.
  6. If you are storing the tool for an extended time, remove the battery to minimize the risk of corrosion and leakage.

Buying Guide To Choose the Best Caliper

When purchasing a digital caliper, there are several factors to consider. The following are the essential things to keep in mind when buying a digital caliper:

Depth Gauge

This is an important feature of a digital caliper because it allows you to measure the depth of whole things. It’s also necessary for measuring the thickness of different materials. That’s why you should buy a caliper that has a depth gauge.

Locking Screw

The locking screws on a digital caliper help keep the measuring jaws in place. This ensures that the measurements taken are accurate. Many products have low-quality or improperly functioning locking screws, so it is important to check the screw before buying the caliper.

Inside and Outside Jaws

The digital caliper has two parts: the inside and outside jaw. The inside jaw is used to measure the internal dimensions of an object. In contrast, the outer jaw is used to measure the external dimensions. It is important to check that the jaws are sturdy and durable before buying a caliper. Some products on the market have delicate measuring jaws that do not measure correctly or get damaged easily.


The longer the digital caliper, the more efficient it is. Professionals need a caliper at least 6 inches long to get the best results.

Zero Button

You need this feature when you reset the device to 0 to start the subsequent measurement. Some calipers also have an on and off switch. Make sure that your caliper comes with an accurate zeroing feature to get precise details.

Millimeters and Inches

Some people prefer to measure dimensions in millimeters, whereas others prefer inches. This is why it’s preferable to buy a device that can support both modes. Some devices also have more measurement modes than others, which can be more versatile for your needs.


You need a digital caliper with a large screen that displays the measurements to get accurate readings. This will save you time and effort in the long run.

Ease of use

An excellent digital caliper will have smooth movements of its measuring jaws, sensitive whales, and an easy-to-use interface. As a result, you won’t have to spend as much time or effort on your job.

IP 54 protection

Your digital calipers will be used in challenging environments if you are an expert. That’s why your device must be resistant to damage. The IP 54 protection will increase the device’s durability by making it resistant to water, dirt, and oil.

Final Thoughts

This article discusses five different types of digital calipers, each with advantages and disadvantages. When choosing a caliper, consider features such as calibration, accuracy, ease of use, durability, measurement types, and conversion units. This will assist you in making the best choice possible for your circumstances. Remember that you get what you pay for when it comes to calipers, so why not invest in a product that will offer you excellent service for years to come?

We think Mitutoyo 6″ calipers are the best digital calipers on the market. They are easy to use, durable, and precise in measuring. They also have a wide range of applications. However, you need to choose a size range that suits your needs.

Frequently Asked Questions About Best Digital Calipers for Machinists

What Kind of Calipers Is the Most Accurate?

It is possible to make more precise measurements with a vernier caliper than a regular ruler. There are two different types of scales on a vernier caliper. It is necessary to use two different scales: one to measure in millimeters and another to measure in inches.

Are Digital Calipers the Most Accurate?

Digital calipers can accurately measure the inside diameter, outside diameter, and depth of an object. They are more accurate than other calipers because they can automatically convert between standard and metric measurement systems, have an easy-to-read digital display, and convert between standard and metric measurement systems.

How Accurate Are Micrometers?

A standard micrometer can measure things with accuracy as good as 1/1000 of an inch. Micrometers with a vernier scale can accurately measure things up to 1/10,000 of an inch.

Why Is a Vernier Caliper More Accurate Than a Meter Stick?

When measuring length using a meter stick, you must estimate the measurement’s final digit. Compared to a meter stick, the vernier caliper enables precise determination of the fractional portion of the minor division.

Are Vinca Calipers Good?

The VINCA DCLA-0605 digital caliper is a fantastic value for money. Its accuracy is comparable to that of calipers of a similar price range. A protective casing and an RS232 interface are included, making it an excellent choice for those who want to record their measurements directly on a computer.

How Accurate Are Mitutoyo Calipers?

The Mitutoyo 536-221 Scribing vernier caliper can measure objects with an accuracy of 0.05 mm. This is ideal for scientific research and other applications requiring high precision, such as medical imaging. The lower scale on the vernier has a reading of 0.05 mm, which is very close to the upper scale.

Are SPI Calipers Good?

Calipers and micrometers of SPI grade are ideal for performing precise measurements. Whether vernier, dial, or electronic, Calipers can be used for any inside/outside measurement application. SPI micrometers enable the most exact measurements possible with a hand instrument in demanding situations.

Where Are Starrett Calipers Made?

Since 1880, Starrett has been manufacturing tools in the United States. Our headquarters is still in Athol, Massachusetts, where we were founded. We have expanded to other states where we make various American-made products.

What Kind of Calipers Is the Most Accurate?

Digital calipers are a type of measuring tool used to determine the inside and outside diameters and the depth of an object. They have an easy-to-read digital display and can convert between metric and standard measurement systems. Furthermore, they have a higher level of accuracy than other types of measuring instruments.

Are Dial Calipers More Accurate Than Digital?

Dial calipers usually come in either metric or imperial measurements. This means you might need two different calipers for metric and one for imperial sizes. However, some digital calipers can convert between the two measurement types on the fly. Dial calipers are reliable if they are kept clean and free of obstructions.

What Is the Least Accurate Caliper?

Hole center attachments are cylindrical steel slugs with sharp points. They help you measure the distance between the centers of two holes. Outside and inside, spring-joint calipers are less accurate than other measuring tools, but they are still helpful.

What Is the Difference Between Vernier Caliper and Digital Caliper?

The dial caliper is superior to the vernier caliper in terms of precision. The vernier caliper is more difficult to decipher than a dial caliper. In general, the vernier caliper is less expensive. To use a dial caliper, you must have a single unit. On the other hand, Vernier calipers can show measurements in millimeters and inches.

What Is the Accuracy of a Digital Caliper?

Digital calipers can have a “reading hold” feature that keeps the reading after being used. This is helpful when you need to take a measurement in a problematic or awkward location where you can’t see the display. Ordinary digital calipers are stainless steel and are accurate to 0.001 inches (0.02 mm). They also have a resolution of 0.0005 inches (0.01 mm).

Are SPI Calipers Good?

Calipers and micrometers with SPI markings are ideal for taking precise measurements. They are capable of handling any measurement application, both inside and outside. SPI micrometers are particularly well suited for applications requiring the most precise hand-tool measurements possible.

Are All Digital Calipers the Same?

The presence of markings in both metric and SAE units is beneficial when attempting to measure something. This will provide you with the most accurate results possible. For the most part, all calipers are accurate to within 1/4 or 1/8 inch, which is sufficient for most applications. On the other hand, if you require greater precision, you may need a caliper with a higher accuracy resolution.

How Accurate Are Micrometers?

A standard micrometer can measure things with the same accuracy as vernier calipers, 1/1000 of an inch. Some micrometers have a vernier scale, making them even more accurate, measuring 1/10,000 of an inch.

Visit this website to learn more about how to use Digital Calipers.