Calibrating torque wrenches, was dist. rattle
auditude at cox.net
auditude at cox.net
Tue Jan 27 21:08:13 EST 2004
Yes, I had it calibrated. Not just a calibration check. It is a clicker type, and it was off. I took
it in just to do it, I think it may have been like $45 or so. I probably could have bought a
cheapie new one for that much, but I still wouldn't know if it was calibrated, and I like to fix
what's fixable instead of always replacing. Also, I didn't pay for the torque wrench in the first
place, so what the hey. http://www.washingtoncalibration.com/ They gave me a sheet with
the before and after values. I've got it around here somewhere.
They actually brought it into calibration, and the end of the handle was different when I got it
back. I don't remember what it looked like before, but now it has a sort of tamped metal
putty in the end of it, like they plugged it after getting in there to do their magic. I think it
was smooth metal before. I wonder what they had to do to get to the innards. Obviously
whatever they did hadn't been done before, or maybe they didn't have the special Snap-On
tools or parts. They didn't blink when I brought it in tho', and I got a free calendar out of it. =)
Is there a DIY calibration, versus calibration checking?
On 27 Jan 2004 at 17:05, Bernie Benz wrote:
> Had it calibrated, or DIY? It's a simple DIY job if one has a bathroom
> scale, dead weights, or better, and one can easily monitor repeatability.
> The clickers are bad, the bending beams are good in this respect.
> > From: <auditude at cox.net>
> > There are also those, at least me, that had their torque wrench calibrated.
> > It was actually quite a bit off. But this is a old hand-me-down Snap-On. It
> > seems like a pretty good quality tool, so it seem worth it to at least check
> > the calibration. They said it was still good, and I think they mentioned that
> > they don't see many like that come in.
> > I like to use it wherever it seems important, wheels, engine building, etc.
> > Other stuff I just make tight.
> > The whole calibration thing tho' is false security. It only shows that it was
> > in calibration when it left the metrologist, after that who knows.
> > Maybe if you always subjected the wrench to the same routine, and could
> > establish over time that it stayed in calibration, then one could be really
> > secure.
> > Ken
> > Bernie Benz b.benz at charter.net wrote:
> > "Also, there those DIYers among us insecure enough that they must use an
> > uncalibrated torque wrench on every nut and bolt."
More information about the 200q20v