News
Next Suface Roughness Class: May 13–14, 2026
April 12, 2026The May 2026 class is now FULL. Please contact us if you’d like us to inform you about upcoming classes. You may also want to check out the online classes. Dr. Donald Cohen’s
Surface Measurement Series Video – Brake Rotors
April 10, 20263D surface texture measurement shows us a lot about a surface and how it will function. In this video series we show you how 3D measurement works and all we
Surface Measurement Series Video – Step Heights
March 24, 20263D surface texture measurement shows us a lot about a surface and how it will function. In this new video series we show you how 3D measurement works and all
Surface Roughness Seminar Series
December 19, 2025We’re excited to kick off a new series of free, in-person seminars covering surface texture measurement, analysis, and application! Seminar 1: Creating surfaces with “high quality” look and feel Join
Surface Roughness Top Ten
July 9, 2025If you work with precision surfaces, you’ve most likely encountered callouts for surface roughness/surface texture. At first glance, roughness may seem straightforward…you run a roughness gage over a surface, it
Why do seals leak…when Ra meets spec?
June 13, 2025Surface texture plays a major role in sealing. But just making a surface “rougher” or “smoother” may not improve how well your surfaces seal. Interested in a deep dive into
Let the surface tell you what it wants to be
May 27, 2025Many surface measurement projects begin with a similar challenge: parts meet specifications, yet some fail while others function. How can we differentiate between the good and poor parts, to understand
I need 3D surface texture measurement (but a new system isn’t in the budget)
April 22, 2025Measuring surface roughness in 3D can offer a host of benefits. But for many companies, a measurement system may not be in the near-term budget. Here’s a way to reap
My Ra values are different…should I care?
March 25, 2025The average roughness parameter (Ra, or Sa for 3D measurements) is helpful for spotting changes in a surface or in surface-forming processes. A common question, however, is: how much of
What makes this measurement system so special?
January 2, 2025Through Michigan Metrology’s 30 years in business, we’ve owned many generations of 3D surface texture measurement instruments. For the past 10 years we’ve been lucky to have what we consider