Just received my Draper torque wrench. Out of the box it looks good quality, box is more than ample for the job and the wrench is quite weighty suggesting good build quality. The mechanism which disconnects when you reach your torque rating is a bit vague and to be honest I can't be 100% sure it is disconnecting at the right place but I guess with use this will improve.
The one MAJOR problem with this torque wrench is the poor calibration from the box. There is no way of knowing whether the wrench is set at 10Nm or 20Nm, which is quite an issue. I have just phoned their technical line and they said these wrenches need sending of to be calibrated, which now reduces my happiness for grabbing what seemed to be a bargain.
This is my first torque wrench so cannot be sure how this compares to others, but I have used a lot of accurate measuring equipment at uni as I do mechanical engineering and this is by far the worst calibrated scale I have seen. I have ordered the Draper micrometer as well for more heavy duty applications and will post a review of that when I also receive that one.
On the whole seems decent enough quality for DIY applications but beware that the wrench will probably need calibrating at extra cost . . .
EDIT: After using the wrench for a few days and comparing to the micrometer Draper I have just received - the wrench probably won't need calibrating if you can deal with the dodgy scale. Just be careful to select the right setting. The micrometer wrench's scale is much better and lines up properly unlike this one. But the two wrenches torque the same suggesting they're calibration is reasonably accurate. So if like me you are using the wrench to torque up parts around an engine - having to get into the inlet manifold bolts etc this 3/8 drive one is probably a lot more suitable, but the micrometer version has a far more accurate scale.