The tape measure has remained virtually unchanged for over 100 years until now. The E-Tape Digital Tape Measure revolutionizes not only the tape measure but also expands its utility as never before envisioned. The large digital display provides easy reading while the advanced features are readily accessible. These features include three memories, US or metric units, centerline calculation, re-zero, inside/outside measurements and an automatic shut-off. Also, optional wireless Bluetooth transmission. In addition to its advanced features, the digital tape measure has a sleek modern design. Made of poly carbonate plastic, it is made to last in the most rugged of environments. It uses a standard CR2032 battery for 64 hours of continuous usage.