Best Outside Micrometres of 2026

Kenneth Collin Avatar
Kenneth Collin
Last Updated: 2 Feb 2026

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Outside micrometres are precision measuring tools used to accurately measure the diameter of objects in engineering and manufacturing industries. These instruments are designed to provide precise measurements of cylindrical objects like pipes, rods, and bearings. They consist of a calibrated screw mechanism that moves a spindle towards or away from the object to be measured. The spindle is then locked into place, and the measurement is taken from the micrometre's scale. Outside micrometres are essential for ensuring the accuracy of parts and components, and they are widely used in the automotive, aerospace, and machinery industries.

At a Glance: Our Top Picks

Proster 0-25mm High Precision Micrometer Cover #TOP 1
Proster 0-25mm High Precision Micrometer
ftb score rating icon 9.9
Mitutoyo 193-101 Digital Outside Micrometre 0-25mm Cover #TOP 2
Mitutoyo 193-101 Digital Outside Micrometre 0-25mm
ftb score rating icon 9.8
ZDNT 25mm Digital Outside Micrometer Cover #TOP 3
ZDNT 25mm Digital Outside Micrometer
ftb score rating icon 9.6

Top 9 Outside Micrometres

#TOP 1

Proster 0-25mm High Precision Micrometer

PST185
0-25mm
Proster 0-25mm High Precision Micrometer Cover
Proster Outside Micrometer 0-25mm(0.01mm Graduations) Metric External Caliper with Zero Wrench and Packing Box High Outside Metric Micrometer Precision Machinist Tool

The Proster Micrometer is designed for precision, boasting a measurement range of 0-25mm with an accuracy of 0.01mm. Its tungsten carbide steel measuring surface ensures durability, making it a long-lasting tool for your projects. The satin-finished chrome thimble and barrel with contrasting scales allow for easy reading of measurements, saving you time and effort. Additionally, the included zero adjustment wrench lets you quickly calibrate the micrometer, ensuring consistent results every time you use it.

What We Like
High precision measurements
Durable tungsten carbide surface
Easy-to-read scales
Convenient zero adjustment
#TOP 2

Mitutoyo 193-101 Digital Outside Micrometre 0-25mm

193-101
Mehrfarbig
0-25mm
Mitutoyo 193-101 Digital Outside Micrometre 0-25mm Cover
Mitutoyo 193-101 Digital Outside Micrometre with Mechanical Counter, 0 mm-25 mm Range

The Mitutoyo 193-101 Micrometre offers a mechanical digit counter that makes reading measurements to 0.01mm straightforward, saving you time and reducing errors. Its vernier scale features slanted barrel markings, which help minimise parallax errors, allowing you to take highly precise outside diameter measurements. The ratchet-stop mechanism ensures you apply uniform pressure every time, giving consistent and repeatable results. Additionally, the satin chrome finish on the thimble and sleeve resists rust and reduces glare, making it easier to work in various lighting conditions.

What We Like
Easy reading to 0.01mm
Reduces parallax errors
Uniform pressure for accuracy
Rust-resistant satin chrome finish
Consistent, repeatable measurements
#TOP 3

ZDNT 25mm Digital Outside Micrometer

ZDNT
ZDNT 25mm Digital Outside Micrometer Cover
ZDNT External Micrometer Metric 25mm Outside Micrometer 0-25mm Digital Outside Micrometer 0-25mm Measuring Range 0.01mm Graduations High Precision Machinist Tool

The ZDNT Outside Micrometer is a precision tool designed for accurate measurements ranging from 0 to 25 mm. Its thick carbide anvil ensures that you can rely on precise readings, while the lock feature allows you to secure your measurements easily. The single hand ratchet handle design provides you with better control over the force applied, making it simpler to achieve exact results. With laser etched graduations, you can enjoy clear visibility without glare, enhancing your measuring experience.

What We Like
High precision measurements
Easy to read scale
Durable hard metal construction
Convenient single hand operation
Supplied with storage case
#TOP 4

Draper 46603 0-25mm External Micrometer, Blue

46603
Blue
0-25mm
Draper 46603 0-25mm External Micrometer, Blue Cover
Draper 46603 0-25mm External Micrometer , Blue

The Draper 46603 Micrometer is an excellent tool for anyone needing precision measurements. It offers great value for money, ensuring that you don’t have to compromise on quality while staying within budget. Its user-friendly design makes it easy to operate, even for beginners. The durable construction means it can withstand regular use, providing reliability over time. With its sleek design, it is not only functional but also aesthetically pleasing, making it a great addition to your toolkit.

What We Like
Value for money
Easy to use
Durable construction
Sleek design
#TOP 5

Beslands 0-25mm Outside Micrometer Screw Gauge

0-25MM
Beslands 0-25mm Outside Micrometer Screw Gauge Cover
Beslands Outside Micrometer 0-25 mm Micrometer Screw Measuring Screw 0.01 mm Resolution Micrometer Metric

The Beslands Micrometer 0-25mm is a precision tool designed for measuring the outside thickness or diameter of small parts, helping you achieve accurate results. Its measuring range of 0-25 mm with a fine resolution of 0.01 mm ensures you get precise readings, ideal for detailed work. Made from hard metal with a strong steel frame and a corrosion-resistant surface, this micrometer offers durability and a long service life, so you can rely on it for regular use. Additionally, the locking feature allows you to secure your measurements, preventing any accidental changes while you work.

What We Like
High precision 0.01 mm resolution
Durable hard metal construction
Corrosion resistant surface
Locking mechanism for readings
Wide 0-25 mm measuring range
#TOP 6

Beslands 4-Piece Precision Micrometer Set

BL-QFCSET-FR
Set of 4
Beslands 4-Piece Precision Micrometer Set Cover
Beslands External Micrometer Set of 4, Outside Metric Micrometer(0-25mm;25-50mm;50-75mm;75-100mm), 0.01mm Graduation Precision Measuring Calipers

The Beslands Micrometer Set includes four different measuring ranges from 0-100mm, providing versatility for various measurement tasks. With a high accuracy of 0.01mm, these tools ensure you receive precise readings, essential for any machining or engineering project. Constructed from premium quality materials, they offer durability and a long service life, making them reliable tools for frequent use. Remember to calibrate to exact zero before use to maintain accuracy and performance.

What We Like
Multiple measuring ranges included
High accuracy of 0.01mm
Durable construction materials
Convenient calibration standards included
#TOP 7

Starrett 436.1XRL-1 Outside Micrometre with Ratchet Stop

436.1XRL-1
multi-coloured
0"-1"
Starrett 436.1XRL-1 Outside Micrometre with Ratchet Stop Cover
Starrett 436.1XRL-1 Outside Micrometre, Ratchet Stop, Lock Nut, Carbide Faces, 0-1" Range, 0.001" Graduation

The Starrett 436.1XRL-1 Micrometre features a durable one-piece spindle, ensuring high accuracy for your measurements. Its satin chrome finish and micro-lapped carbide faces enhance longevity and precision. The ratchet stop provides consistent pressure, allowing you to achieve reliable results every time you use it. Additionally, the ring-type knurled lock nut secures your measurements, offering you peace of mind during use. This combination of features makes it an excellent choice for precision work.

What We Like
High accuracy measurements
Durable carbide faces
Consistent pressure ratchet stop
Secure lock nut
#TOP 8

Mitutoyo 103-130 Outside Micrometer 25-50mm

103-130
Mitutoyo 103-130 Outside Micrometer 25-50mm Cover
Mitutoyo 103-130 Economy Design Outside Micrometer, 25mm-50mm with 0.001mm Graduation

The Mitutoyo 103-130 Micrometer is designed with a lightweight workshop style, making it easy for you to handle during precise measuring tasks. Its ratchet stop feature ensures a constant measuring force, which helps you achieve consistent and reliable results every time. You benefit from an impressive accuracy of 2 micrometres, allowing for very fine measurements. Additionally, the micrometer offers dual graduations of 0.01 mm and 0.001 mm, giving you flexibility depending on the precision you require.

What We Like
Lightweight and easy handling
Constant measuring force
High accuracy of 2 µm
Dual graduation scales
#TOP 9

TOPWAY 401310 High Precision Micrometer Tool

401310
Grade C
TOPWAY 401310 High Precision Micrometer Tool Cover
External Micrometer Metric 0-25mm High Precision Metalworking Engineering and Mechanic Car Repair Outside Measuring Tool TOPWAY 401310

The TOPWAY 401310 Micrometer is designed for high precision measurements, making it ideal for metalworking and car repair. Its hardened carbide anvils ensure accurate readings, allowing you to measure with confidence. The drop forged steel enamelled frame adds durability, ensuring it withstands tough working conditions. With a ratcheting thimble, you can achieve consistent pressure for precise measurements, while the clear markings ranging from 0-25mm make it easy to read and use. This tool is supplied in a plastic storage case for convenient organisation.

What We Like
Precise measurements with carbide anvils
Durable steel frame construction
Consistent pressure with ratcheting thimble
Easy-to-read clear markings
Convenient storage case included
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are outside micrometers?

Outside Micrometers are used for measuring the thickness or outside diameter of small parts. They are industry standard measuring tools because of their high accuracy/resolution and ease of use. ... To ensure an accurate measurement, the measuring faces of a micrometer must be both flat and parallel.

2. What are outside micrometers used for?

Micrometers come in different shapes depending on the type of object they are designed to measure. For measuring the thickness of an object, an outside micrometer is essential. Outside micrometers look like a clamp — a moving spindle comes together with a fixed “anvil” to measure the thickness or diameter of a part.

3. What is the working principle of outside micrometer?

The working principle of the Micrometer is based on screw and nut. (Rotational moment to linear moment) As we know as the screw rotates one revolution on the screw, then the screw moves linearly by one pitch distance.

4. What is the reading of an outside micrometer British?

The reading line on the sleeve is divided into 40 equal parts by vertical lines that correspond to the number of threads on the spindle. Therefore, each vertical line designates 1/40" or 0.025". Every fourth line, which is longer than the others, designates 0.100" and is numbered.

Editor's Notes

During our outside micrometre research, we found 128 outside micrometre products and shortlisted 9 quality products. We collected and analyzed 8,780 customer reviews through our big data system to write the outside micrometres list. We found that most customers choose outside micrometres with an average price of £33.01.

The outside micrometres are available for purchase. We have researched hundreds of brands and picked the top brands of outside micrometres, including Proster, Mitutoyo, ZDNT, Draper, Beslands.

Written by
Kenneth Collin Avatar

Kenneth Collin graduated from Imperial College, London, at 22. He is a UX/UI designer, a web developer, and a writer, amongst others. At age 14, Kenneth programmed his first app. Kenneth's app served as a remote control for censored devices. "When I was 8, I would pick up scraps from electronics and try to rebuild or at least fix them," Kenneth said in one of his recent articles on Home repairs for top gadgets.