Torque Wrench Calibration

coffelt2 wrote:
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In the Air Farce we were supposed to click the break type torque
wrench three times at the lowest setting before using it. This was
supposed to spread the lubrication inside.

I like the idea of taking the wrench to a shop to check calibration.
Having said that, in my first shop in the USAF we calibrated torque
wrenches so I may be a tad biased. The machine we used was huge and
probably weighed close to a ton. Torque wrenches in the USAF are
periodically calibrated, I forget the cycle, and taken in for
calibration if dropped or abused.
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Dan, U.S. Air Force, retired

Heck, Dan, in the Air Force there was an alternate torque measuring
system that didn't even require a torque wrench. (PMEL calibrated, of
course)
Simply "strip" it and back off one half turn. Farm boys from Georgia taught
me that.

Old Chief Lynn

We used the "tighten it until it breaks, then back off a half turn"
and the "finger tight, plus a quarter turn" methods. QC wasn't fond of
the response "two clicks of the left elbow" when we were asked what the
proper torque was. Wasn't the -2 T.O. series issued to sit on or to
protect ones knees on a B-4 stand? Not that I ever did that, you
understand, but there was talk.

Dan, U.S. Air Force, retired