Simply point and shoot to measure distance, area, and volume. Designed specifically for easy and intuitive use. After one minute, you'll never again look at the directions. LCD displays exactly which measurement is being made. One-key operation automatically performs length, area, or volume calculations. Audible beep confirms each measurement. Three distance memories and one calculation memory are maintained even when the unit is off. Memory permits computing areas and volumes from stored measurements. Calculator function permits addition/subtraction of readings. Range is 2 feet (0.61 meters) to 50 feet (15.24 meters). Resolution is 0.1 feet and 0.01 meters with accuracy of 1% ¬±1 digit. Instantly converts meters to feet or vice versa with the push of a button. Utilizes the newest-generation, high-precision ultrasonic sensor. Designed for indoor/outdoor use. Automatically and accurately compensates for temperature from 32 to 104°F (0 to 40°C). Supplied complete 1-year battery. Size is 5-1/8 x 2-5/8 x 1- 1/8 and weight is 5-1/2 ounces. Replacement battery Cat. No. CON1112.