The Triplett LD7 Laser Distance Meter is a compact laser distance meter designed for one-person operation to measure distances from 2 inches to 23 feet (.5 to 7m) in seconds with high accuracy and repeatability. It features Addition/Subtraction/Area/Volume measurement and Indirect measurement using the Pythagorean theorum. A Stakeout function can be used for for stud and fence layout. Additional features include selectable front/back reference edge, continuous real-time on screen angle display, and memory that saves the last 2 readings. Auto Power Off maximizes battery life. Includes (2) AAA batteries and a 4” x 2” reflective plate for better response and accuracy at longer distances.