This precise, easy-to-use scale makes custom trigger work easy. An
excellent tool for the do-it-yourself gunsmith or the shooter who prefers to
set all his triggers to the same pull weight. This precision scale accurately
measures the force needed for trigger release of firearms. (Accurate to
+/- 2 oz. in 2-oz. increments to 8 lbs.) A sliding indicator remains at the
highest reading when the trigger releases.