Bosch GLM100C. . Features: Bluetooth functionality conveniently transfers and stores measurements from the laser measurer to an iPhone, iPad or Android device via free app. Precision measuring technology measures up to 330 ft. with up to 1/16 in. accuracy. Built-in tilt sensor displays 360 degree angle measurements in two axis, allowing for more accurate measurements. Backlit display with tilt-screen technology offers easy viewing in all directions. Optional R60 digital level attachment transforms the GLM100C into a 24 in. digital level (not included).