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Semi-Automatics—The In-Between Gages

The faucet has been opened a little, and you've just received a long-awaited contract to produce 10,000 large trunnion caps for a manufacturer of earth moving equipment. Despite the joy, you realize that you have a problem: The machines will be in ...


The 'Issues' With Height Gages

Don't tell anyone, but there is something of a problem with height gages. The big issue that they have is what they measure: height.


The Real Dirt About Gaging

I'm not sure that any of us in the metrology business are very close to godliness, but I do know that cleanliness is the first step to approaching accuracy in gaging. Probably every machinist is at least nominally aware that dirt can interfere with...


Fixtures Are A Common Source Of Gaging Error

As a gaging engineer, my concept of a gage includes both the measuring instrument and its fixture. Assuming you are dealing with a reputable supplier, and your instrument was engineered to do its job as intended, there is probably little you can do...


Choice Of Bore Gage Depends On The Application

Indicating bore gages come in two basic varieties: adjustable-capacity gages with interchangeable contacts or extensions and fixed-size gages with plug-type bodies. While indicating plug gages can measure closer tolerances with higher repeatability...


You Won't Err With Air

It is perfectly natural that machinists should have an affinity for mechanical gages. To a machinist, the working of a mechanical gage is both straightforward and pleasing.


Holes Big Enough To Fall Into

Maybe you’re not in Texas, but suddenly you find yourself faced with a huge measurement requirement. You’ve been given the task of checking some large diameters—not your 6 inch variety—I mean those large enough to drive a herd of cows through.


To Help You Select The Right Gage And Master, Let's Play 20 Questions

You will soon be going into production with a new component. There are six or eight ways you could measure the part and dozens of products that might do the job.


Coming To Terms With Accuracy

A question I am frequently asked is, "How accurate is that gage?" I am usually tempted to say something like, "Super accurate" or "So accurate you wouldn't believe it!" But I don't. Instead, I take a deep breath and give my questioner a couple para...


Where's The Fault? SWIPE To Find Out

Nobody likes to be the bearer of bad tidings. This goes back to the dawn of recorded history, when a tribal leader might easily decide to kill the messenger if the news was not to his liking.


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