The bosch gll 2 15 professional line laser is a compact cross line laser for professionals it is small lightweight and versatile it has a robust design with a softgrip covering that protects against knocks and the pendulum lock ensures safe transport line mode is freely selectable and it comes with a target carrying case bs 150 professional building tripod and 3 x 15 v lr6 aa batteries the bosch bs 150 professional building tripod is a must have accessory for an absolutely secure stanc