The world's fastest and most accurate trigger pull gauge measures the pounds of energy required to pull the trigger for discharging your firearm. This is similar to the gauges used by CSI and Law Enforcement agencies to determine if the shot fired was accidental. State-of-the-art strain gauge technology allows for accuracy of 1/10 ounce/2 grams and will read to a maximum of 12 lb/5.4kg; large LCD display for easy reading of the exact pull weight. Simple to use, fully adjustable rod works for all firearms, ten pull memory, requires a 9 volt battery, and includes a storage case.