Just make sure your always in the middle 60% of the wrenches range.
MOst all torque wrenches are most consistent in this range.
If you drop it,, you likely need to re-calibrate it (Click type) I used to work where we had a cal shop and
all the site torque wrenches got checked weekly or when dropped, funny hting,, we used snap on tools exclusively EXCEPT for torque wrenches, turned out Craftsman held their numbers better. :)