Johnson Level 40-6004 130-Feet Laser Distance Measure acurate to 1/16 -Inch at working range of 130-Feet With units of measure as follows inches (decimal 1/8, 1/16, 1/32) Feet, Feet and Inchs Metric Measuring types single distance, Min/max, and continuous measuring Caculated and indirect measuring Addition / subtraction area Volume, 1 Pythagoras function 2 point pythagoras High speed micro processor that caculates quickly Laser Class Il, Power Output 1mW 2 Year Warranty: Johnson Level warrants this product against defects in material and workmanship for two years after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use.