Best Outside Micrometres of 2025

Kenneth Collin Avatar
Kenneth Collin
Last Updated: 29 Jan 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

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

AUTOUTLET Digital Outside Micrometer 0-25 mm Cover #TOP 1
AUTOUTLET Digital Outside Micrometer 0-25 mm
ftb score rating icon 9.9
Silverline 25mm External Micrometer with Case Cover #TOP 2
Silverline 25mm External Micrometer with Case
ftb score rating icon 9.8
Starrett V436.1MXRL-25 Outside Micrometre Cover #TOP 3
Starrett V436.1MXRL-25 Outside Micrometre
ftb score rating icon 9.6

Top 10 Outside Micrometres

#TOP 1

AUTOUTLET Digital Outside Micrometer 0-25 mm

AUTOUTLET Digital Outside Micrometer 0-25 mm Cover
AUTOUTLET Micrometer Digital Outside Micrometer 0-25 mm/ 0.001 mm(0.00005"), LCD Digital Micrometer Micrometer Calipers Inch/Metric Measurement, High Precision Micrometer Measuring Tool

The AUTOUTLET Micrometer offers precise measurements ranging from 0-25 mm with a resolution of 0.001 mm, ensuring accuracy for your projects. Its high-quality ABS and stainless steel construction, along with carbide hard tip measuring faces, provide durability and wear resistance. The easy-to-read LCD display allows for quick inch/metric conversions, making it user-friendly. Additionally, the micrometer features absolute and relative measurement functions, which enhance versatility in various measuring tasks, giving you greater control and convenience in your work.

What We Like
High precision measurements
Durable materials
Easy-to-read LCD display
Versatile measurement functions
#TOP 2

Silverline 25mm External Micrometer with Case

282378
25mm
Silverline 25mm External Micrometer with Case Cover
Silverline External Micrometer 25mm (282378)

The Silverline 25mm Micrometer is a precision measuring tool designed to provide accurate measurements from 0 to 25mm with a resolution of 0.01mm. Its strong steel frame ensures durability, making it resistant to wear and tear. The corrosion-resistant finish allows for prolonged use, even in less-than-ideal conditions. Plus, it comes with a protective case, giving you peace of mind when storing or transporting your micrometer. This combination of features makes it an ideal choice for both professionals and DIY enthusiasts.

What We Like
Durable steel frame
Corrosion-resistant finish
Precise measurements
Includes protective case
#TOP 3

Starrett V436.1MXRL-25 Outside Micrometre

V436.1MXRL-25
Starrett V436.1MXRL-25 Outside Micrometre Cover
Starrett V436.1MXRL-25 Outside Micrometre, Ratchet Stop, Lock Nut, Carbide Faces, 0-25mm Range, 0.001mm Graduation, +/-0.001mm Accuracy

The Starrett V436.1MXRL Micrometre is designed for precision and convenience. Its tapered frame allows you to measure in narrow slots and tight spaces with ease. The vernier scale in metric units ensures you can take accurate outside diameter measurements, which is crucial for various applications. With its ratchet-stop mechanism, you benefit from uniform pressure, leading to repeatable measurements. Additionally, the satin chrome finish on the thimble and sleeve helps resist rust and reduces glare, making it easier for you to work in different lighting conditions.

What We Like
Precision measurements in tight spaces
Uniform pressure for repeatability
Rust-resistant satin chrome finish
Accurate and durable carbide faces
#TOP 4

M-SURE MS-110 Digital Micrometer 50mm

M-SURE
MS-110-050
M-SURE MS-110 Digital Micrometer 50mm Cover
M-SURE MS-110-050 Digital External Micrometer 50mm (2 inch) Large LCD Display Gauge Caliper Outside Measuring Metric Imperial

The M-SURE MS-110 Micrometer features a measuring range of 25-50mm, making it suitable for a variety of tasks. With a resolution of 0.001mm, you can achieve highly precise measurements, ensuring accuracy in your work. The device conforms to factory standards, giving you peace of mind about its reliability. Additionally, UKAS calibration is available, enhancing its credibility for professional use. This micrometer is designed with an enamel finish frame and a heat insulating grip for comfortable handling during measurements.

What We Like
Highly precise measurements
UKAS calibration available
Comfortable heat insulating grip
Conforms to standards
Large LCD display
#TOP 5

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 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

Proster 0-25mm High Precision Micrometer

‎TL676
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 8

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
#TOP 9

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 10

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
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 135 outside micrometre products and shortlisted 10 quality products. We collected and analyzed 12,513 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 £47.24.

The outside micrometres are available for purchase. We have researched hundreds of brands and picked the top brands of outside micrometres, including AUTOUTLET, Silverline, Starrett, M-SURE, Draper. The seller of top 1 product has received honest feedback from 94 consumers with an average rating of 4.9.

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.