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Video Intro to Michigan Metrology
November 8, 2024Don Cohen decribes Michigan Metrology’s contract measurement services, measurement consulting, and surface roughness/wear/tribology training classes. Learn how Michigan Metrology can help you solve issues related to leaks, squeaks, friction, wear,

Average Roughness
February 29, 2024If you rely on average roughness (Ra) to control your surfaces, check out this short animation. It shows that very different surfaces can all have the same Ra value…and Ra
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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
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3D surface texture measurement through the years
December 19, 2024As we’re continuing to look back on our 30 years in surface texture measurement, we thought it would be interesting to look at how far measurement technology has come over
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New paper focuses on surface finish for castings
October 17, 2024The surface finish of castings can be as critical to quality as for any precision surface. Yet, finish requirements in the industry are often ill defined, loosely referencing RMS roughness
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Can you tell these plastic finishes apart?
August 9, 2024Most surface finish specifications for plastics refer to an SPI finish (SPI mold finish). These numbers refer to a standard set of finishes for injection molded parts set by the
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When switching from metal to plastic, does the texture stay the same?
July 30, 2024Download this article as a PDF Companies regularly need to replace metal components with plastics for reasons of weight, cost, performance, corrosion, etc. Very often, however, when the material is
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Controlling parting lines in molded plastics
July 22, 2024In plastic molding, parting lines can form on the component where portions of the mold meet imperfectly. These ridges and/or valleys may lead to several types of functional problems with
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Controlling Knit Lines in Plastic Molding
July 15, 2024In the molding process, knit lines form where the material does not weld together seamlessly as it moves through the tooling. The cause may be related to the mold surface,
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Remembering Roger Simpson
May 16, 2024Michigan Metrology opened its doors in the Detroit area in 1994. I’d spent the previous several years working with the team at WYKO, developing the ”white light interferometry” technology that enables
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Bringing 3D optical measurement to Detroit
March 19, 2024Remembering the early days, Part 2 Michigan Metrology, LLC is approaching our 30th anniversary, and we’re taking a look back on some of the highlights of our history. In this
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A measurement lab can be a development partner
February 20, 2024Startups, incubators, “skunk works…” when a company is in startup mode, everything is happening at once. Manufacturing processes are being designed while funding is being secured and sales are being