A great new tool for engineers, interior designing specialists or for the home handy man. This ultrasonic laser distance and area laser measuring device is excellent for taking accurate measurements and extremely easy to use. Simply find the distance you want to measure with the laser then press the read button. The distance from you to that object will displayed. That`s it! No more messy and dangling tape measures! Specifications Units: metric by default, press `set` to change to imperial Maximum Minimum Distance: 2 Feet to 50~60 feet Accuracy: .5 % + 1 digit (2-60ft) Working Frequency: 40Khz Working Temperature: 50 degrees F to 97.4 degrees F Laser: Class II Laser Product Output: 1mw Power Source: 1 x 9V battery (not included) Dimension: 122 x 39 x 120 (LxWxD) Features Area and Volume Calculation Simple Easy to Use Interface LCD Display