With this handy tool its easy to project vertical or horizontal lines for perfect positioning of pictures, tiles, cabinets etc. Just balance the leveller using the inbuilt spirit levels & then with the push of a button it displays a bullet straight laser line. Features a flip out suction cup for mounting to smooth glass & surfaces, & a 3 metre locking tape measure. Powerful & portable, will easily fit in toolboxes & kitchen drawers. 2 x AAA batteries (not included)3 metre locking tape measure 2 x bubble spirit levels Laser Line up to 30 feet/10 metres Battery life up to 40 hours continuos use