Inspection & Measuring Equipment

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Published: 9/15/2009

Laser Highlights
The number of different laser applications is surprising, yet it continues to grow. Here's a look at a few.

Published: 7/23/2008

Data Collection Goes Wireless
About 25 years ago, the concept of data collection for process control took a major leap forward. This was about the time that a combination of electronic technology and economics allowed gaging to became digital. With a digital signal available...

Published: 12/1/2002

Sliced Bread—And The Limits Of Air Gaging
"Air gaging is the greatest thing since sliced bread," a friend once said. And he was right—air gaging is good.

Published: 11/1/2002

Surface Texture From Ra to Rz
The irregularity of a machined surface is the result of the machining process, including the choice of tool; feed and speed of the tool; machine geometry; and environmental conditions. This irregularity consists of high and low spots machined into ...

Published: 10/2/2002

DFGT - Double Flank Gear Testing
Functional gear testing, also known as total radial composite deviation, is a method of looking at the total effect of gear errors. This test method simulates the conditions under which a set of gears is likely to operate as a result of the gears m...

Published: 9/5/2002

The Three Ds Of Straightness Plugs
We have touched on different applications of air gaging: size, match gaging and form applications such as taper. In this column, we'll discuss air straightness plugs.

Published: 8/5/2002

A Different Differential
When we talk about differential gaging, we are usually referring to the process of using two sensing devices and combining the results into one measurement. The measured dimension is the change in the position of the two sensing components.

Published: 7/1/2002

Stacking Up For Big IDs
For those medium and large parts with inside diameters greater than 4 inches, an inside micrometer is often used as the inspection tool of choice. This is especially true if the volume of parts is low and there is a large range of diameters to acco...

Published: 6/1/2002

The Dial Tells It All
Dial indicators—you've seen one, you've seen them all. They are all over the shop, and as you walk around, they all look the same to you.

Published: 5/19/2002

Say Hello to Mr. Abbé, Mr. Hooke And Mr. Hertz
Whenever you use a handtool or precision gage, you should be aware of typical pitfalls that prevent good gage performance. These include measurement errors resulting from environmental conditions (dirt and temperature), loose and/or worn gage parts...