Inspection & Measuring Equipment
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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.
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.
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...
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...
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...
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...
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.
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...
Electronic Height Gages
We've looked at "basic" comparative height gages, which are used for layout tasks and other surface plate measurements. Related to these are instruments known as electronic height gages.
Inspecting Tapers, Part 2: Toolholder Gaging
A few months ago, we discussed the calibration of conical taper masters, which are used to master taper gages. Now let's look at the parts those gages are used to inspect—toolholders.