Best Surface Roughness Gauges of 2025

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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
Top 10 Surface Roughness Gauges
UpAmcarker 30Pcs Surface Roughness Comparator
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.
Mitutoyo Surftest SJ-210 4MN
The Mitutoyo Surftest SJ-210 4MN is a portable surface roughness tester that is easy to use with its 2.4-inch color graphic LCD, user-friendly design, and fast charging capability. The detector can perform measurements in various orientations and settings, including up against a wall surface. The instrument is made in Japan.
Healthible Surface Roughness Comparator Set
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.
GOYOJO Surface Roughness Tester
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.
Mitutoyo SJ-210 Surface Roughness Tester
The Mitutoyo Roughness Tester is a portable, handheld device used to measure surface roughness in shop, metalworking, manufacturing, and quality control applications. Its 2.4-inch color LCD touchscreen can display in vertical or horizontal orientation and has an Ingress-Protection (IP)-53 rating for water and dust resistance, making it suitable for use in various environments. The device features auto-calibration for accurate measurement of 39 parameters, five profiles, and storage of up to 10 measurement conditions and one measured profile. It displays total and sectional measurement, and evaluation curve, bearing area curve (BAC), amplitude distribution curve (ADC), and waveform results. With a micro-SD card, it can store up to 10,000 results with data in 16 languages and supports screen capture. This Roughness Tester provides convenience and accuracy for surface roughness measurement.
SUNNYSONG KR310 Surface Roughness Tester
The SUNNYSONG KR310 Tester is a versatile handheld device perfect for measuring surface roughness in various production environments. With its user-friendly design, you can quickly obtain accurate measurements of different surfaces, including planes and grooves. The split design allows you to easily reach tight spaces, making it ideal for inner wall measurements of pipes. Plus, it adheres to international standards, ensuring reliable results. This tool not only enhances your efficiency but also provides you with comprehensive data for better analysis.
GOYOJO Surface Roughness Tester
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.
SUNNYSONG kR220 Surface Roughness Tester
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.
SUNNYSONG KR110 Surface Roughness Tester
The SUNNYSONG Roughness Tester offers advanced features for accurate surface measurements. Its durable aluminum design effectively resists electromagnetic interference, ensuring reliable performance. With a high-speed DSP processor, you benefit from faster data processing and calculations, making your measurements more efficient. The bright OLED display provides clear visibility in various lighting conditions, so you can easily read results. Additionally, the rechargeable lithium-ion battery allows for extended use without memory issues, and it can be charged quickly via a standard USB interface, providing convenience whether you’re in the field or at your workstation.
Mahr Federal Pocket Surf IV Surface Roughness Gauge
The Mahr Federal 2191802 Pocket Surf IV Portable Surface Roughness Gage EGH-1026 is a pocket-sized, portable instrument that measures surface roughness on a wide variety of surfaces. It allows users to view any one of the four, switch-selectable parameters, and displays out-of-range and battery low signals. The gauge also features switchable probe positions and MarConnect data output for easy SPC-processing.
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.
During our surface roughness gauge research, we found 24 surface roughness gauge products and shortlisted 10 quality products. We collected and analyzed 3,121 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 $411.33.
The surface roughness gauges are available for purchase. We have researched hundreds of brands and picked the top brands of surface roughness gauges, including UpAmcarker, Mitutoyo, Healthible, GOYOJO, SUNNYSONG. The seller of top 1 product has received honest feedback from 70 consumers with an average rating of 4.9.

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.