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Automatic Dual Grade Laser  :


The Spectra Precision® GL612N single grade and GL622N dual grade lasers are automatic self-leveling, rugged and cost-effective. An intuitive keypad and graphic display make all grade and alignment functions easy to use and greatly reduces setup time and increases productivity. A matching remote control also simplifies all level, grade, and vertical alignment setup tasks. 

Key Features

  • Ultimate Control of X/Y Axes
  • Fully automatic up to +/-25% grade on X/Y axes
  • Automatic Axis Features (X Axis - only GL622N), - High Precision Axis Alignment (only GL622N), - Simplified Grade Match: measures and displays the existing grade over unknown ground, - Complete PlaneLok: automatically locks on the laser beam to an existing elevation
  • Alignment range for both axes is +/-40°
  • Fully automatic vertical levelling
  • Fingerprint function - detects only the laser beam of the paired transmitter  

Built for Today’s Jobs

  • Withstands a 1 m (3 ft) drop onto concrete
  • Long operating range - 800 m (2.600 ft) diameter
  • Long operating radio range - 150 m (490 ft)
  • Intuitive keypad and graphic display
  • Password secured
  • Mask mode
  • Various power options
  • Automatic temperature compensation
  • Electronic leveling vibration filter  

User Benefits

  • Quickly adapts to site requirements
  • Simplifies level, grade and vertical alignment setups
  • Reduces time to do steep slope work and drainage installation
  • Increases reliability, accuracy and durability
  • Economize operating costs  

GL612N/GL622N Specifications

  • Leveling accuracy1,3: ± 0.5 mm/10 m, 1/16“ @ 100 ft, 10 arc seconds
  • Grade accuracy1,3: ± 1.0 mm/10 m,1/8“ @ 100 ft, 20 arc seconds
  • Grade temperature drift sensitivity: ± 0,3 mm / 10 m / 1°C; 1/16” @ 310 ft. @ 1°F
  • Operating diameter1,2: appr. 800 m (2600 feet) with detector
  • Grade range (Y, X-GL622N): ± 25% both axes (not simultaneously)
  • Rotation: 300, 600, 750 rpm
  • Laser type: 639 nm
  • Laser class : Class 2
  • Self-leveling range: appr. ± 14°
  • Leveling indicators: LCD indications and LED flashes
  • Radio range (HL760)1,2,4: up to 150 m (490 ft)
  • Power source: NiMH battery pack
  • Battery life1: 35 hours NiMH
  • Operating temp.: -20°C to 50°C (-4°F to 122°F)
  • Storage temp.: -20°C to 70°C (-4°F to 158°F)
  • Tripod attachments: 5/8 x 11 horizontally and vertically
  • Dust and waterproof: Yes - IP67
  • Weight: 3.1 kg (6.8 lbs)
  • Low voltage indication: LCD battery indicator
  • Low voltage disconnection: unit shuts off
  • Warranty: 5 Years

Includes: GL622N laser with RC602N remote, HL760 receiver, clamp, NIMH & universal charger