Norbar torque wrench problem

[James1979]

Every year but only because it's not me paying.

Ditto. Insurance insist on it. They pay. Same as the inspection on the compressor tank.

Even the bloke doing it says it’s un necessary

 

[brightspark]

Every year but only because it's not me paying.

was working at cummins diesel that rebuild engines and they checked theres daily on a calibrator. wish i still did work for them coulda got mine tested

 

[James1979]

There’s a tester on eBay for £50 at the moment. Still in cal.

I was tempted.

Norbar Static Torque Meter 0 - 2000Nm | eBay

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[indy4x]

Yesterday I was thinking about this thread and it got me to wondering just how accurate my torque wrenches are so I thought I'd do some testing.

Of the six I own I picked out four which are all 1/2" drive.

A nearly-new Norbar which goes up to 30lbs/ft
An Laser which goes from 15-100-odd lbs/ft which is my usual one to use for any work
A Draper which is getting on but which I had sent for calibration when I had to torque some M12 x 1.25mm bolts to 70lbs/ft in cast ally.
A really old Gordon which was old when my Grandad owned it and he's been dead since 2004.

The Gordon had been knocking around in my works van for years and severely abused as it was so old I never thought to use it as a torque wrench a sI have several others similar. It's always been a big old ratchet spanner for doing drive wheel bolts on concrete saws etc.

Anyway, the Gordon was the push-through type so I pushed the drive square out of it set it for 30 foot pounds and stuck it in my vice (I can hear people cringing already and I don't give a damn). I set the other three each in turn to 30lbs/ft and put the drive square in the hole on the old Gordon torque wrench, pulled on them all in turn and all of them clicked off at the 30 foot pounds the Gordon was set to. So it seems that not only do all of my three 'good' torque wrenches all agree with each other but the years of neglect and abuse and rattling around in a dusty van toolbox had not affected the calibration of that old 1970's-ish tool in the slightest.

What's not to like, sounds completely logical, will be sticking mine in a vice to compare them, will use some jaw protection tho

 

[Robotstar5]

Yesterday I was thinking about this thread and it got me to wondering just how accurate my torque wrenches are....

I thought the same about my Norbar wrenches I bought in the 70's, although I gave always looked after by detensioning after use. I took them into work and tried them on the calibrated tester and was amazed they were spot on across most of the range and maybe a couple of ft lbs out in places.