Laserliner beamcontrol master 120 rotating laser and receiver laserliner 026 04 00a p this beamcontrol master 120 set rotating laser and receiver from laserliner is a quality manual rotary laser p p manufactured to a high standard with sturdy grp housing with special die cast zinc chassis on which the laser diode is firmly anchored the three pecision engineering vials of ground and polished glass are set on the chassis to ensure long term stability innovative housing design with integr