This Ultrasonic Distance measurer is a FAST and CONVENIENT indoor measurer! The new Laser Dimension Master's multipurpose red laser beam can be used as an aimer Or Pointer. Perfect for real estate, interior much more. a decorating, carpeting, tiling, painting, estimating, assessor work and fast, accurate. Take interior measurement estimates at the speed of sound! Measure from 2 ft. (61cm) up to so ft. (15.2m) with 99% accuracy. Narrow ultrasonic beam design Permits broader use, even in applications where furniture or fixtures are present. Continuous measurement mode lets you find a desired distance. Unit automatically verifies measurement with built-in error checking program. Pivoting head allows for dual-position use. Automatic compensation for unit depth using either measuring position. Simple, 'Point and Shoot' ultrasonic technology takes measurement with a single press of a button. Unit's easy-to-read LCD displays measurement estimates in Feet Inches or in Meters. Automatic Shutoff feature conserves battery. Pocket Dimension Master comes with two CR-2032 lithium batteries that lasts up to 10 years or over 70,000 measurement estimates. Laser uses three LR-44 replaceable batteries good for approximately 4,500 measurements. Comes with easy-to-follow User Instructions and a, 1-Year Limited Warranty. Actual Size: 1-7/8 x 5 x 3/4".