Why do you need a torque wrench?
For example, on a bike the torque settings are quoted as a range: eg Shimano Hollowtech II crank bolts are quoted as 12 – 15 N.m
http://techdocs.shimano.com/media/techdocs/content/cycle/SI/SI_6M8FA_001/SI_6M8FA_001_En_v1_m56577569830638324.pdf
This range is fairly wide and hardly needs a torque wrench to get right.
There are few better torque wrenches than Norbar.
Norbar manufacture their own equipment, have their own calibration facility and also provide a calibration service to other suppliers/ manufacturers.
http://www.norbar.com/products/videos-on-how-to-use-torque-instruments/how-to-use-a-torque-wrench.aspx
Norbar manufacture torque wrenches that are better than +/- 3% accurate. (Some people confuse accuracy with precision.)
3% of 12N.m is hardly worth talking about.
The range quoted for bike parts is not qualified by component manufacturers as to wether that is dry assembled or lubricated (grease, anti-seize, thread seal or whatever). In the past Campagnolo for example has stated on some seatposts do not lubricate the seat-clamp thread .
Some carbon seatpost manufacturers eg Reynolds advise against lubricating the seatpost in the frame .
So with a calibrated torque wrench with a calibration certificate and better than 3% accuracy what setting do you put the wrench to, if a 12 – 15 N.m setting is quoted?
Foe further thoughts on torque settings:
http://www.honestjohn.co.uk/forum/post/index.htm?t=82119
