Quote:
Originally Posted by sammyg2
... calibrated? . That's what standards are for. You don't need some outside yahoo to calibrate your tools for you unless yer brain dead or have a stoopid gubmint contract that requres third party. My machinists are required to check all mikes against a standard and if out, make the adjustment. It aint rocket surgery...
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Our "Quality Industrial Complex" pulls that crap with our mics and balances. Requires each and every one to be pulled out of service for a month or so for "calibration" so that it can get a DOE Type 1 cal cert. Such shenanigans aren't required by anyone but the internal cal lab monkeys.
The funny thing is that what we call a Type 3 cal is what the real world does - check before and after use against a calibrated standard. This is somehow seen as inadequate by our cal lab monkeys. I see it as being far superior to a full calibration! The user knows immediately, before the workpiece leaves his station, that the measuring tool was good or bad. The risk of a physical standard (jo blocks/std weights) changing during a calibration interval is FAR less than that of a complex measuring tool (calipers/balance) changing in that same interval. If you rely on every tool being Type 1 certified you put everything you've accepted at risk until that tool closes calibration in 6 mo or a year. The parts you've accepted since then might be long gone - and you have to call them back and go through tons of paperwork agony.
Oy the hangovers I used to have when I lived this life as a product engineer...
Well that was a rant -- get some gage blocks kids!
And I'm thankful that for home use I have my grandfather's measurement stuff - he was an aerospace tooling machinist in the '50s and '60s. No chinese stuff there!