The STANLEY FATMAX Laser Distance Measurer TLM165Si has a working range of 60m with an accuracy of +/- 1.5mm @ 10m and provides distance, area and volume calculations along with a Pythagoras function. With bluetooth connectivity allowing syncing to most smartphones and tablets, the TLM165Si quickly captures measurements and creates custom floor plans by connecting to the STANLEY Smart Connect™ App. Compact and lightweight, the TLM165Si has a point and click measurement function and runs with 3 x AAA batteries. Easily capture measurements, especially those that would be difficult to capture with a tape measure. Equipped with a multitude of convenient features that make any tradesman's life on the job easier, the TLM165Si is ideal for electricians, contractors, masons, remodelers, painters, architects, inspectors, and builders.