The triplett ld70 laser distance meter is a compact laser distance meter designed for one-person operation to measure distances from 2 inches to 230 feet 0.05 to 70m in seconds with high accuracy and repeatability. It features addition/subtractiorea/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 20 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.