The Bosch BLAZE GLM 20 X laser measure is an easier, faster way to one-person measuring, instead of the old conventional tape measure. The Bosch GLL 30 S Self-Leveling Cross-Line Laser Kit provides a tool that projects two lines, making a cross-line projection, for a wide array of level and align uses. With top-notch accuracy and one-switch operation, the user's leveling and alignment tasks are done quickly and correctly. The Smart Pendulum System self-levels and indicates out-of-level condition to help ensure an accurate layout, and it locks the lines at any angle. The pendulum system locks when switched off, to assure secure tool transport. Square and compact by design, the GLM 20 X laser measure is ready for anywhere portability. It has a backlit display for easy viewing, even in dark areas. The laser measure is simple to operate, so users need only press one button to get accurate measurements to within 1/8 In., and press again to hold the measurement.