Easier and faster to use than a tape measure and more accurate than ultrasonic measures, the Prexiso X2 single-person laser measuring tool (model 3350) from Calculated Industries measures distances up to 100 feet with accuracy to 1/8-inch or better through entire range. About the size of a cell phone, it fits easily in your hand, pocket, or tool belt. It comes with a rugged carrying pouch and is backed by a two-year limited warranty. 3350 Prexiso X2 Laser Distance Measuring Tool At a Glance: Measure distances, areas, and volumes for material estimates Works in feet-inches, inches, or meters Measure from 4 inches to 100 feet with accuracy to 1/8 inch or better over entire range Includes protective pouch Powered by two AAA batteries Two-year limited warranty Measure distances, areas, and volumes (view larger). Ideal for contractors/builders, remodelers, estimators, carpenters, plumbers, interior designers, and anyone who needs accurate measurements, the Prexiso X2 is great for measuring in crowded rooms or measuring inaccessible areas. Designed for indoor and limited outdoor use, the Prexiso X2 can be used in a wide array of applications: Measure distances, areas and volumes for material estimates. Determine placement for fence posts. Determine if a room is square. Measure distances for placement of safety equipment. Measure walls and ceiling of a room to estimate paint required. Place electrical receptacles to meet code. Measure distances for HVAC duct placement. Measure distances between sprinkler heads for irrigation. Measure horizontal roof lengths for installing rain gutters. Measure room for home theater to ensure proper placement of audio/video equipment. The Prexiso X2"s bright laser beam and ergonomic design make it easy to use. It includes Pythagorean functions, continuous measuring for staking out, and the ability to measure and calculate areas and volumes. The device measures 4-3/4 x 2 x 1 inches, and it weighs 3.5 ounces. It"s powered by two AAA batteries, which provide enough battery life for up to 3,000 measurements, and it includes a power-saving auto shut-off function. What"s in the Box Calculated Industries Prexiso X2 3350 laser distance measuring tool; nylon pouch with Velcro strap; user guide; batteries Great for contractors (view larger). And for use at home (view larger).