Focusing: eyepiece focusingPrism: Bak 4Measure theory: semi-conductor laser, no harm to eyesMeasure distance: 15-1500mMeasure tolerance: +/- 1 mReading: LCDSize: 60x145x142 mmWeight: 440gBattery: 1x6F22 (9V)Tripod screw: 1/4"