[TR] Craftsman torque wrench

[Don Hiscock]

I've had a Craftsman DigiTork torque wrench for over thirty five years, and
still use it.  It's stored with the spring completely relaxed, but after
that long on a relatively inexpensive tool at the time, relying on its
accuracy is really more a matter of trust than validation.  That said,
tests others have done on a number of torque wrenches, even (gasp) Harbor
Freight, have shown them all to be generally OK.  And a TR is pretty
forgiving.

The procedure for *checking* calibration is pretty simple -- there's some
very sophisticated lab equipment that uses the same
mass-on-the-end-of-an-arm-approach.  But let's say one wants to CHANGE
something in the calibration.  Has anyone ever done that on a DigiTork?
There must be thousands and thousands of these still in use, yet I've never
found any instructions or guidance for calibrating one.

(I have noticed that as the wrench has aged, the little torque values
printed inside the window seem to have gotten smaller...)

On Thu, Aug 16, 2018 at 11:49 PM, <glemon at neb.rr.com> wrote:

> That is a great tutorial on how to calibrate a torque wrench,I have to
> confess that I have two or three and I have never bothered in many, many
> years of ownership.  For those that have done it or had it done how far off
> are they usually?
>
> Greg Lemon
> TR250
>
>
> ** triumphs at autox.team.net **
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