Advanced linear digital plan measure with PC interface makes it easy to create linear, area, and volume takeoffs with speed, accuracy, and confidence when estimating, bidding, or planning. Ergonomic design is comfortable to hold, and the dual LCD displays are easy to read. Provides transfer capabilities from plans, blueprints, maps, and out of scale drawings. Features 91 built-in scales including 50 English units, 41 metric, and 8 custom for out-of-scale drawings for maximum versatility. PC interface (cable sold separately) transfers rolled values directly into commonly used spreadsheets or estimating programs. 7.2" x 1.6" x 0.6" overall size. Two 3-volt lithium (CR-2430) batteries included. Interface add-on kit requires optional 15’ USB interface cable and works with Windows 2000, XP, and 32-bit Vista operating systems.