Bosch Compact Laser Distance Measure, 120-Feet GLM 35 ACCURACY: Features long-range measuring with extreme accuracy and measures distances up to 120-feet to within 1/16-inch. as well as area, length, volume, continuous measurement and addition/subtraction EASY TO USE: Simple, one-button operation  press button once to begin measuring. The GLM 35 is compact and small enough to fit in any pocket LIVE MEASURING: Provides default real-time measurement that adjusts as you move closer and farther from target, just like a tape measure DISPLAY: Features a backlit display that allows measurements to be easily read, even in dark areas PRECISION: The GLM 35s Bosch laser technology allows users to be more productive with greater jobsite accuracy and precision Class IIa laser product, &lt;1mW power output