The Lyman™ Electronic Digital Trigger Pull Gauge is the perfect tool for target and silhouette shooters, gunsmiths and hunters who want to adjust trigger pull weight accurately and easily. Lyman's Electronic Digital Trigger Pull Gauge utilizes state of the art strain gauge technology which provides accuracy to +/- 1/10 oz over a working range of 0 to 12 lbs. The gauge is equipped with a large, easy-to-read LCD display and is push button operated for zero, clear and averaging functions. Can be converted to read in kilograms and is capable of taking multiple readings and giving average weight for the string of tests. Powered by one 9 volt battery (not included). Includes vinyl storage case.