The bosch gll 2 80 p professional line laser levelling in 360deg faster and easier than ever high work efficiency simultaneous performance of horizontal and vertical levelling applications in the entire room with only one tool large working range precise work in a diameter of up to 80 m using the lr 2 professional receiver easy handling self levelling up to 4deg within 4 seconds compact design comes with 4 x 15 v lr6 aa batteries building tripod bs 150 professional l boxx