I made the mistake of buying a budget torque wrench a couple of years ago.
It was a williams wrench and at 50 quid should have been decent. But I've never had confidence in it.
Now got a Norbar Model 100 20-100nm. 1/2 inch drive. Nice compact design, quality bit of kit and should last a life time.
Comes with a traceable calibration certificate.
Made that mistake I sometime make, bought budget and ended up buying twice.
Also got a 1/4 inch drive Britool. I'd have to have a look but I think it's around 10-40 nm in range. Was my Dad's, it's probably about 30 years old and still works a treat.
The britools are nice, plus the mechanism gives you a visual indication that torque has been reached as well as a good click and feel. They are quite long though and the Norbar wrench is better I think for motorcycle work.