Seven measuring modes: length, area, volume, minimums and maximums, continuous length, indirect length and multi-surface area measurements. Wide range of measurement options including inches, feet and inches, decimal feet and the metric system. 7 different measuring modes that are easily mastered with a minimal learning curve. Perfect tool to determine total surface area for paint, wall paper, construction materials needed, etc. Built-in bubble level for measuring horizontal distances and swing out extension pin for measuring inside of corners or hard to reach place. 4 AAA bateries included.