Inspection & Measuring Equipment

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Published: 6/1/2001

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...

Published: 5/17/2001

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.

Published: 4/1/2001

Gaging Oldies But Goodies—A Review Of Some Things We Should Know By Now
Ten years ago this month, Quality Gaging Tips first appeared in Modern Machine Shop. Since that time, we have covered many tools and techniques for assuring accurate, repeatable measurement and gaging in machine shops.

Published: 3/1/2001

Do's And Don'ts For Keeping Dial Indicators In The Game
Just because dial indicators have been around since the early 1900s, don't expect them to fade away with the last century. This tool's long-term popularity is well earned.

Published: 1/3/2000

Going To Extremes
When most of us think about measurement environments, what generally comes to mind are pleasant laboratories with temperatures controlled to 68°F/20°C—plus or minus a degree or two. Or in the worst case, we picture a gaging shop with swings of temp...

Published: 12/1/1999

Calipers: Ideal For Measurement On The Go
Although it has been around for a long time, the caliper is still an extremely versatile and useful tool for making a range of distance measurements (both ODs and IDs). While micrometers are more accurate, they have a limited measurement range (typ...

Published: 11/1/1999

Machine Compensation
Ever since electronics first made their way onto machine tools, machine builders and users have tried to achieve some level of "automatic" process control. Certain causes of dimensional variation in machined parts—tool wear, for instance—occur grad...

Published: 10/1/1999

Perfect Gaging In An Imperfect World
It is certainly not news that, more and more, gages are being forced out onto the shop floor. Tight-tolerance measurements that were once performed in a semi-clean room by a trained inspection technician are now being done right next to the machine...

Published: 7/1/1999

Gaging Countersunk And Chamfered Holes
While countersunk and chamfered holes are similar in appearance, functionally they are quite different. Consequently, different gages exist to serve these different functional requirements.

Published: 6/1/1999

Never Forget The Basics
We spend a lot of time in this column discussing sophisticated gages and out-of-the-ordinary applications—so much so, that perhaps we've lately been neglecting the basics. After all, the fanciest electronics, computers and software won't deliver ac...