Best Surface Roughness Gauges of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 11, 2026

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Surface roughness gauges are essential tools for measuring the roughness of a surface. They are commonly used in various industries, including automotive, aerospace, and manufacturing. These gauges work by measuring the height of peaks and valleys on a surface to determine its roughness. They come in different types, including portable and benchtop models, and can measure various parameters such as Ra, Rz, and Rt. Surface roughness gauges are easy to use and provide accurate and reliable results, making them an essential tool for quality control and inspection in many industries.

At a Glance: Our Top Picks

Mitutoyo 178-390 Surftest SJ Detector Cover #TOP 1
Mitutoyo 178-390 Surftest SJ Detector
ftb score rating icon 9.9
Mefape Carbon Steel Surface Roughness Gauge Set (30 Specimens) Cover #TOP 2
Mefape Carbon Steel Surface Roughness Gauge Set (30 Specimens)
ftb score rating icon 9.8
GOYOJO Surface Roughness Tester Cover #TOP 3
GOYOJO Surface Roughness Tester
ftb score rating icon 9.6

Top 10 Surface Roughness Gauges

#TOP 1

Mitutoyo 178-390 Surftest SJ Detector

178-390
silver
Standard
Mitutoyo 178-390 Surftest SJ Detector Cover
Mitutoyo 178-390, Standard Detector for Surftest SJ-201 and SJ-301, 6.75" Inside Depth

The Mitutoyo Surftest Detector is designed to work seamlessly with Surftest SJ-210 and SJ-301 surface roughness testers, making it ideal for use on the shop floor and in quality control tasks. Its diamond stylus tip ensures highly accurate surface measurements, helping you detect even the smallest roughness details. The detector features a low skid force, reducing the risk of surface damage during measurement, which is great for delicate materials. Additionally, it offers precise measuring forces tailored for different models, so you can rely on consistent and reliable readings every time you use it.

What We Like
High-precision diamond stylus
Low skid force for delicate surfaces
Compatible with multiple Surftest models
Suitable for quality control applications
#TOP 2

Mefape Carbon Steel Surface Roughness Gauge Set (30 Specimens)

KBV02
Mefape Carbon Steel Surface Roughness Gauge Set (30 Specimens) Cover
Surface Roughness Gauges Set, Roughness Standards Set, Carbon Steel Surface Finish Comparator, Roughness Comparitor, 30 Specimens with Ra0.05-12.5mm

The Mefape Surface Roughness Set offers you 30 samples with different roughness levels, making it easier to measure and compare surface finishes accurately. This set is perfect for quality control and helps you calibrate your roughness instruments regularly to keep them precise. Made from durable 45# carbon structural steel, the gauges are built to last and maintain stability during use. By using this set, you ensure consistent and reliable surface roughness measurements, which can improve your inspection process and product quality.

What We Like
Wide range of roughness levels
Durable carbon steel material
Instrument calibration aid
Supports quality control
#TOP 3

GOYOJO Surface Roughness Tester

MAKIT-1102
Standard
GOYOJO Surface Roughness Tester Cover
GOYOJO Surface Roughness Tester High Accuracy 0.01μm Portable Roughness Gauge 4 Testing Parameters Ra/Rq 0.05~15.0μm Rz/Rt 0.1~50.0μm with Standard Calibration Block and Bracket

The GOYOJO Roughness Gauge offers exceptional precision with its ability to measure four different parameters: Ra, Rz, Rq, and Rt. You can enjoy accurate readings as fine as 0.01μm, which is ideal for various applications requiring detailed surface analysis. Its versatility allows you to assess different surface types, from flat to grooved, even on larger areas. Plus, the high-speed DSP processor ensures quick data processing, enabling you to obtain results without delay, making your workflow more efficient.

What We Like
High measurement accuracy
Versatile surface compatibility
Fast data processing
Convenient OLED display
#TOP 4

BOQNZN 30-Specimen Surface Roughness Comparator Set

SRSSZX1013
BOQNZN 30-Specimen Surface Roughness Comparator Set Cover
30 Specimens Surface Roughness Comparator Composite Pocket Set Gauge, Ra0.05-12.5mm Microfinish Comparator, Surface Finish Comparator Set for Lathe Machinery Manufacturing Teaching

The BOQNZN Surface Roughness Set offers you a precise way to measure and compare surface textures with 30 different specimen samples. This variety helps you easily identify and ensure the quality of surfaces, whether you're inspecting finished products or materials. It supports six common machining processes, allowing you to measure roughness from milling to grinding, which broadens your testing capabilities. The set is user-friendly, with clear markings and an organized layout that makes it simple for both professionals and students to use. Made from durable carbon steel, it is resistant to rust and deformation, ensuring you get reliable results over time.

What We Like
Wide roughness range
Supports multiple machining types
Clear labeling and organization
Durable carbon steel build
#TOP 5

UpAmcarker 30Pcs Surface Roughness Comparator

30Pcs Surface Roughness Comparator
UpAmcarker 30Pcs Surface Roughness Comparator Cover
30Pcs Surface Roughness Comparators,Roughness Test Block Ra0.05-12.5mm Microfinish Comparator, Surface Finish Comparator Set for Lathe Machinery Manufactur Teach (30pcs Surface Roughness comparators)

The UpAmcarker Roughness Comparator Set offers precise measurements across a range of roughness levels from Ra0.05 to 12.5mm. With 30 different samples, you can easily compare and assess surface qualities, ensuring your products meet top standards. This set is designed for various machining processes, making it versatile for different applications. Made from durable 45 super carbon steel, the comparators are built to last while maintaining accuracy. Plus, the clear labeling and organized layout allow you to quickly identify and compare samples, making it user-friendly for both professionals and students.

What We Like
High precision measurement
Durable construction
Wide application range
Easy to use
#TOP 6

SUNNYSONG kR220 Surface Roughness Tester

KR220
SUNNYSONG kR220 Surface Roughness Tester Cover
SUNNYSONG 22 Parameters Handheld Digital Surface Roughness Tester Meter kR220- Portable Profilometer with Real-time Clock, Ra Rz Range, and Display for Accurate Surface Measurement

The SUNNYSONG Roughness Tester is designed for precise surface measurement in various production environments. It can assess up to 22 different roughness parameters, allowing you to obtain detailed insights into the quality of machined parts. With its clear liquid crystal display, you can easily view measurement results and graphics. The device also features a high-precision inductance sensor, ensuring stability and accuracy in your readings. Additionally, it is equipped with a curved surface sensor, making it versatile enough to measure both concave and convex surfaces, enhancing your inspection capabilities.

What We Like
Measures 22 roughness parameters
High precision and accuracy
Clear display for easy reading
Suitable for large workpieces
Versatile for various surfaces
#TOP 7

GOYOJO GSR750 Surface Roughness Tester

GSR750
Professional
GOYOJO GSR750 Surface Roughness Tester Cover
GOYOJO GSR750 Surface Roughness Tester, High-Precision Digital Profilometer with 5 μm Diamond Stylus Inductive Sensor, Multi-Parameter Surface Finish Measurement for Engineering & Laboratory Use

The GOYOJO GSR750 Roughness Gauge helps you measure many surface roughness parameters, making it versatile for different industrial needs. Its diamond-tipped stylus with a steady contact force ensures accurate and consistent readings on metal or coated surfaces, even on fine details. The large backlit screen shows live profiles and data, with an easy menu and auto-calibration to reduce errors, making it user-friendly for engineers and inspectors. Plus, its rechargeable battery lasts over 20 hours, allowing you to perform long inspections without interruption. This portable device is designed for convenience and reliability in your daily quality checks.

What We Like
Multi-parameter measurement
High-precision diamond stylus
User-friendly interface
Long battery life
Compact and portable
#TOP 8

Healthible Surface Roughness Comparator Set

Comparator Set 30Pcs
Healthible Surface Roughness Comparator Set Cover
Healthible Surface Roughness Standards Set, Surface Finish Comparator Set, 30 Specimens with Ra0.05-12.5mm

The Healthible Roughness Comparator is an essential tool for measuring surface roughness with precision. It includes 30 different roughness levels, allowing you to select the most suitable sample for your specific needs. Made from durable 45# carbon structural steel, this set ensures long-lasting reliability and accuracy for repeated use. Regular calibration of your surface roughness instruments is vital, and this set aids in that process. Additionally, following the provided tips for use helps maintain the integrity of the samples, ensuring consistent results every time.

What We Like
Multiple roughness levels available
Durable steel construction
Supports instrument calibration
Guidelines for proper use
#TOP 9

GOYOJO Surface Roughness Tester

MAKIT-1031
White
GOYOJO Surface Roughness Tester Cover
GOYOJO Surface Roughness Tester Profilometer High Precision Digital Surface Roughness Meter Gauge (White)

The GOYOJO Roughness Gauge is a versatile tool that allows you to measure various surface roughness parameters, ensuring you can adapt it to your specific needs. Its advanced inductance sensor offers exceptional precision, giving you measurements as fine as 0.001μm, which is crucial for maintaining quality in manufacturing and engineering. With exclusive digital signal processing technology, the gauge provides reliable and accurate results that are easy to read on the LCD display. Additionally, it boasts a significant data storage capacity, holding up to 200 original data groups, which is beneficial for tracking and analyzing your measurements over time.

What We Like
Multiple measurement parameters
High precision accuracy
Easy-to-read display
Large data storage capacity
#TOP 10

SULMILE SRT-6223+ Surface Roughness Gauge

HKNDTSRT6223PLUSSPLIT
SULMILE SRT-6223+ Surface Roughness Gauge Cover
SRT-6223+ Surface Profile Gauge Surface Roughness Gauge SRT6223+ Digital Roughness Tester Meter for Measuring Blast Cleaned Surfaces with Separate Cabled Probe Range 0-800 µm / 29.5 mils

The SULMILE SRT-6223+ Gauge offers precise measurements of surface roughness, especially useful for checking blast cleaned surfaces. Its durable tungsten carbide tip lasts through up to 20,000 readings, saving you money on replacements. The compact and lightweight design makes it easy to handle and use in different environments, so you can take accurate readings wherever you need. Plus, it features convenient power options with manual or automatic shut-off to help extend battery life, letting you work longer without interruptions. This tool is designed to give you reliable, efficient, and easy-to-use surface measurements.

What We Like
Accurate surface measurement
Durable tungsten carbide tip
Compact and lightweight design
Battery-saving power options
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How do you use a surface roughness gauge?

Using a surface roughness gauge involves placing the roughness scale next to the workpiece and sliding the various scales next to each other. The comparator scale area should be adjacent to the surface being measured. To compare, draw your fingernail across each surface at right angles to the tool marks.

2. What are the three main measuring techniques used to inspect surface roughness?

The three main measuring techniques for inspecting surface roughness are profiling, area, and microscopy techniques. Profiling techniques involve taking measurements of the part's surface using high-resolution scanning probes. These methods allow for accurate assessment of surface roughness in different applications.

Editor's Notes

During our surface roughness gauge research, we found 24 surface roughness gauge products and shortlisted 10 quality products. We collected and analyzed 2,097 customer reviews through our big data system to write the surface roughness gauges list. We found that most customers choose surface roughness gauges with an average price of $343.18.

The surface roughness gauges are available for purchase. We have researched hundreds of brands and picked the top brands of surface roughness gauges, including Mitutoyo, Mefape, GOYOJO, BOQNZN, UpAmcarker. The seller of top 1 product has received honest feedback from 191 consumers with an average rating of 4.9.

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.