Patrick Nugent

Patrick Nugent is vice president metrology systems for Mahr Federal Inc. (Providence, RI). For more information, call (800) 343-2050, e-mail or visit



The Shape of Things to Come: A Look at the New ISO Form Standards

These standards may have a significant impact on how some companies specify, measure and manufacture parts.
September 3, 2013
In August of 2011 I made a presentation to our sales team on how we had incorporated the new ISO Geometrical Product Specifications into our operating software for all of our form tester products.
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Advances in Shaft Measurement

As shaft measurement systems have gained popularity, users have been demanding more and more capabilities from them.
April 3, 2013

The term “shaft measurement system” is standard industry parlance today, but to think of these gages as measuring only shafts is too limiting.

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Test & Inspection

Assessing Surface Functionality

November 2, 2012
There are many different ways to measure and analyze surfaces.
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Test & Inspection: Improve Surface Finish Measurement for Aerospace Manufacturing

July 27, 2011
The latest optical methods for measuring surfaces can be quite adept at measuring difficult to access surfaces.
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50 Years of Quality: A Superficial History of Surface Finish

March 30, 2011
Any number of influences can leave their mark on the surface of a part. The result is a microscopic maze of etchings that detail the history of a part’s manufacture.
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Shaft Measurement Made Simple

March 27, 2009
There is growing popularity for a loosely defined class of shaft measuring systems that can accomplish checks faster than other methods, and do so directly on the shop floor where the shafts are made. Frequently used in Europe, shaft measuring systems are gaining U.S. popularity in a number of high-volume applications.
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Important Considerations in Error Compensation

November 24, 2008
No matter whether you are interested in a machine tool, a metrology system or another precision device that relies on mechanical motion, what errors of mechanical motion are compensated for and how they are compensated directly impacts that system’s ability to operate at the highest level of capability.
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Compare Tactile and Optical Technologies for Surface Texture Measurement

July 31, 2008
A look at both of these technologies shows their applications tending to diverge rather than compete as technology develops.
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Quality 101: Surface Analysis: Beyond Roughness

April 25, 2008
Most discussions on the quality of surface finish revolve around the measure of roughness. Indeed, roughness is the most common measure of surface finish, and parameters such as average roughness (Ra) and mean roughness depth (Rz) are the most commonly specified. But the ways to measure a surface and the reasons for doing so go far beyond roughness.
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 In honor of World Quality Month, we spoke to James Rooney, ASQ Past Chairman of the Board of Directors 2013, for his take on quality around the world.
For more information, read the ASQ Speaking of Quality column.
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