Hilti Laser. Model: PM 4-M.
Multi-line laser with 3 lines and plumbing point laser with red beam.
Accuracy +3/32 in at 33 feet.
Max. operating distance (diameter): 20000 mm (lines), 328 ft (lines, with receiver).
Maximum operating time: 8 hours.
Features:
Multi-line laser for precise and fast aligning, leveling and squaring.
Centric design allows one person layout.
Fine adjustment dial for high-precision alignment.
Out-of-level and low-battery alerts help prevent mistakes and unexpected downtime.
Laser class 2 (no special precautionary measures needed).

Applications:
Setting out drywall tracks on floors, ceilings and walls for partitioning.
Transferring reference heights.
Vertical alignment of pipes.
Leveling electric sockets, cable trays, radiators and pipe installations.
Leveling and aligning doors and windows.