Laser measure

Pocket-sized GLM 15 laser measure features simple, one-button operation. As soon as the tool is turned on, it calculates precise distances up to 50 feet within 1/8-in. accuracy. A square, flat design
makes the product easy to use on any surface. Users rest it on a flat surface, and measure in any direction with the display screen pointed the same way. Measurements start at the back of the tool for easy distance marking.  —  Bosch Tools, 877-BOSCH-99;