This DW0811 Dewalt self-leveling laser simulates the functionality of a rotary laser by projecting bright crossing horizontal and vertical lines. Its vertical-adjust base ensures easy set-up and fine tune adjustments. The 1/4" and 5/8" thread mounts bring versatility to the tool. The full-time pulse mode with detector maintains full brightness for visibility. The locking pendulum helps prevent damage to internal components. The durable design of the overmolded housing offers IP54 water and debris resistance.