June 20, 2013 – The Hilti PM 4-M multi line laser features two vertical lines and one horizontal line for leveling, plumbing or aligning applications. It rotates around the centre point and has a fine-tuning knob for alignment. The PM 4-M has a rubberized tool body to help protect the laser aperture and tool edges for increased durability, as well as a locking pendulum mechanism for added protection, describes Hilti.