Torque wrench calibration.

HairbearTE · Post by **HairbearTE** » Fri Jul 11, 2008 6:44 pm

Anyone know where I can get this done? I've been given two torque wrenches that have supposedly never been used and this does appear to be the case. One of them has a cert in the box from 2005 at the factory and the other one has no paper work but is said to be 10 years old or more! I'm thinking I should get them tested before using them, especially the 10 year old one. Anyone know where & how much? The wrenches are nothing fancy, one is a sealey and the other a draper, so if it did cost a bit to do then might not be worth it but it'd be a shame to bin 'em as they are both effectively brand new!

kiwicar · Post by **kiwicar** » Fri Jul 11, 2008 6:52 pm

have you checked them against each other? I don't think a torque wrench should vary much with time, just if they are used and outside their recomended range. It would be fairly straightforward to make a test rig for one, a known leaver arm and a known load (say 2 foot long) a 10lb load and a torque arm in a good set of bearings firmly mounted.
Mike

ian.stewart · Post by **ian.stewart** » Fri Jul 11, 2008 7:09 pm

What is the max ratings for the wrenches, I have a electronic tester at work tht I can normally get to use,

HairbearTE · Post by **HairbearTE** » Fri Jul 11, 2008 11:26 pm

One is rated at 10-100lbs and I think the other is 20-150 or some such. I'll double check that tomorrow.

ChrisJC · Post by **ChrisJC** » Wed Jul 16, 2008 12:04 pm

I always check mine with a spring balance which I reckon is accurate enough for putting engines together.

Chris

mgbv8 · Post by **mgbv8** » Wed Jul 16, 2008 8:28 pm

You could try BSRIA in Bracknell if you want it calibrated. I use them to calibrate all my test instruments.