If you've got any doubts about your torque wrench, just grab onto the drive end with your vise with the handle sticking out horizontally.  Put a tie wrap around a bag of shot and hang it from the handle at the pivot point.  Measure the distance to the center of the drive, do the math and verify the setting directly.  Naturally, if you're dealing with a tiny torque wrench that only goes to 200-300 in/lb, use a more appropriately sized weight.  This works really well on the old pointer style wrenches, as you can bend the pointer at the head to read out the actual value.  I did this recently with a wrench that showed -5 pounds at rest.... naturally any reading taken without the repair was 5 pounds off.  Try it, you'll like it.

      <marv>