The Bosch BLAZE One GLM165-10 165 Ft. Laser Measure features Auto Square, which calculates the square footage totals. The easy-to-read backlit display delivers outstanding visibility and usability. This laser distance measure includes default real-time measuring, adjusting as you move closer to or further from the target, just like a tape measure. The BLAZE One takes instant and reliable measurements up to 165 Ft., to size up the job in seconds. It fits in any pocket for easy access. This job site-tough tool is IP54 rated and is built to withstand rainy or dusty conditions.