Metrology Features

Mark Albert's picture
Mark Albert
Many shops have implemented computerized systems to gather data for production reporting, quality control, statistical process control (SPC), and tool management. Stephen Birman, president of High...
Philip Colet's picture
Philip Colet
P roduct information and label code verification are important parts of the packaging and quality control process for manufacturers and consumers in the food and beverage industry. Machine vision...
Daniel M. Smith's picture
Daniel M. Smith
Why would anyone start a new metrology business in this economic climate? Why would they do it in Michigan, the epicenter of the automotive industry recession? The short answer is that if you can...
Belinda Jones's picture
Belinda Jones
As energy prices continue to soar and the public—with increased awareness and concern for the environment—continue to demand environmental accountability from manufacturers, companies are looking...
Frank Gray's picture
Frank Gray
In sports, it's always the fundamentals that your coaches emphasize, like the techniques that you first learn when you’re starting to play baseball—how to hold the ball properly, how to stand and...
George Rodrigues's picture
George Rodrigues
Pharmaceutical processes typically take place on the scale of gallons or liters, even tens of thousands of liters. So why would anyone worry about one little microliter? Because in some situations,...
Fred Mason's picture
Fred Mason
There’s an amazing amount of information available about what uncertainty is and how to specify it. If I understood it completely, I would become a consultant and stop writing this column. In spite...
M. Scott Tillison's picture
M. Scott Tillison
As the skilled, baby-boomer workforce nears retirement, years of technical expertise is exiting as well. Factories are watching years of knowledge leave their organizations, and how to replace these...
Fred Mason's picture
Fred Mason
When thinking about measurement devices and systems, the subject of accuracy comes up. Accuracy has been discussed in past columns of “Measurement Matters.” In the context of measurement system...
Fred Mason's picture
Fred Mason
When thinking about measurement devices and systems, the subject of accuracy comes up. Accuracy has been discussed in past columns of “Measurement Matters.” In the context of measurement system...
William Tandler's picture
William Tandler
Encoding the mating flange: In Workshop No. 7, we used Smart GD&T processes to encode the operation, assembly, and other functions of a flange. In this workshop, we take a deeper look at the...
William Tandler's picture
William Tandler
T he actual purpose of GD&T: It’s common to think that the primary purpose of GD&T is to unambiguously communicate design intent to manufacturing and inspection. In fact, the most...
Fred Mason's picture
Fred Mason
It’s becoming common to refer to the devices used for dimensional and coordinate measurement—vision/optics, lasers, touch probes, and others—as sensors. Multisensor measuring systems use two or more...
William Tandler's picture
William Tandler
What’s a datum reference frame? As discussed in workshop No. 5, datum reference frames (DRF) are coordinate systems, and preferably—at least to start with—Cartesian coordinate systems. As we know...
Anonymous's picture
How much is a kilogram? It turns out that nobody can say for sure, at least not in a way that won’t change ever so slightly over time. The official kilogram—a cylinder cast 118 years ago from...
Fred Mason's picture
Fred Mason
In dimensional measurement it isn’t unusual to measure feature locations relative to reference edges. How one measures an edge depends on how we define it. So what exactly is an edge? Basic edges...
William Tandler's picture
William Tandler
As we know, GD&T is a symbolic language with which to specify permissible limits of imperfection in manufactured parts, namely limits that maximize the parts’ operability, assemblability, and...
Anne Willimann's picture
Anne Willimann
The Airbus A380 is the most modern, spacious, and capable civilian aircraft ever. The project was launched in December 2000, christened “The Flagship of the 21st Century,” and developed in close...
Fred Mason's picture
Fred Mason
Happy New Year! One resolution many people have made is to cut costs. One way to do that is to manufacture in China. Just transfer your current manufacturing processes, use China’s lower-...
William Tandler's picture
William Tandler
Back in the 1940, when Stanley Parker, Mr. GD&T, decided it was time to create a set of tolerancing tools that realistically dealt with reality, two objectives were near the top of his list....