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How many gauges in a Go/No Go Gauge?


Starting to get Involved
Hello Everyone,

So I'm thinking about one of those handles that holds a "go" pin and a "no go" gauge pin. Is this really two gauges or just one? Should it be entered in a gauge log as one or two?

It would be convenient to stick a gauge number on the handle and to count it as one, but I'm wondering if this will create any problems down the line. So for instance, what if I replace either or both of the pin gauges? Does the "gauge" number stay the same? What does that do to traceability? I could end up with a gauge number/name in my system that doesn't actually track back to the pins used to check a particular job since the pins could have been replaced, perhaps multiple times.

I'm curious how others handle this.


Elsmar Forum Sponsor


Starting to get Involved
Hey Ron,

Well, I 'm hoping I'm over thinking this but It seems to me that traceability is an issue.

I'm wondering if I couldn't use a single gage number but then log the changes in that gauges log. So a note that says on 6-10-2020 .125+ pin replaced in Go/No Go Gauge 123456.

Johnny Quality

Quite Involved in Discussions

I treat my GNG gauges like Ron, and like your suggestion if any repairs or replacements happen to a gauge I simply keep a log in each gauges Excel sheet and date and state what happened. It's simple.

However I'm in the world of automotive so I cannot comment if you require more in whichever field you're in.


Starting to get Involved
Hey Johnny,

That's probably the way to go, you wouldn't want to completely disassociate the two ends of the gauge, but this would fix the traceability issue, at least it would make it less likely to assume a trail that really doesn't exist . . . sort of.

I'm wondering now about a version number for a composite gauge like this.


Looking for Reality
Staff member
Super Moderator
FWIW, I think that a Go-NOGO gage is one gage with multiple is used to measure one thing, thus it is one gage. If it were two gages, it could measure two things...but it can't, so it's one gage...


Forum Moderator
Staff member
I would treat it as one gage with multiple elements. Consider a caliper. It is one gage, but can take inside, outside and depth measurements. It is probably in your calibration system as one gage, but all three aspects should be calibrated.
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