The Wheeler Engineering Professional Digital Trigger Gauge is the perfect tool for target shooters, gunsmiths and hunters who want to adjust trigger pull weight in precise increments. Wheeler's Digital Trigger Pull Gauge utilizes state of the art technology which provides accuracy to +/-0.5% 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 to zero/clear. Can be converted to read in kilograms and is capable of taking multiple readings and records MAX and MIN trigger pulls while recording the number of trigger pulls in each session. FeaturesErgonomic over molded design0-12lbs range+/-0.5% accuracyLoad sensor directly contacts the triggerFeature max, min, average and live functionsAudible indicator toneLow battery indicatorSoft touch buttonsArm folds inside housing to protect the load sensor when not in useFoam lined storage case