Как мне лучше перевести:
using an amount of torque estimated to be correct for the case at hand

Контекст:
Select 10 bottles at random and apply a cap to each by hand, using an amount of torque estimated to be correct for the case at hand or as indicated by the table on the following page. (In applying caps, bring the torque up smoothly to the predetermined value and hold for approximately one second.)