GL612N Grade Laser

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Product Overview

The Spectra Precision GL612N Grade Laser provides single grade capability of 25% in addition to being fully self-leveled in vertical for building axis alignment or setting 90°. The GL612N grade laser is simple, robust and easy to use with a menu-driven interface that is replicated on the radio remote control that the laser the first choice for any contractor requiring versatile grade capability.


  • Multiple Applications - the GL612N provides the ability to control level, alignment, single grade, and set 90°
  • Long Range - one person elevation and grade control with 800m (2,600ft) diameter range increases productivity
  • Automatic Self-Leveling - provides fast, easy set-up for horizontal level, grade or vertical alignment
  • Automatic Grade Matching - meaning the laser moves to the on-grade position on the receiver automatically by communicating wirelessly with the receiver and the grade is then calculated - this is generally used when a constant fall is desired but the grade may not be known (renewing existing driveways or matching exisiting surfaces)
  • Grade Range - large, fully compensated grade range from -25% to 25% - keeping the laser leveled no matter what grade you need reducing errors and improving productivity
  • Anti-Vibration Filter - a laser can be affected by high vibration or strong wind, especially when the laser is mounted on a tall tripod - both the GL612N and GL622N have an anti-vibration filter that can be set according to the conditions allowing work to continue regardless of wind conditions or excessive vibrations
  • Temperature Compensation & PlaneLok - as temperature fluctuates throughout the working day, the interal components of a laser can expand and contract which can cause some additional error without the user noticing. This can be resolved through the automatic temperature check that the laser performs where the internal software calibrates the laser to its optimal performance based on the temperature. Additionally, the PlaneLok function can be activated. This keeps the laser beam fixed to a receiver in a set position eliminating any error that can be caused by fluctuating temperatures, keeping the laser accurate and error free.
  • Rugged - the GL612N can withstand a 1m (3ft) drop directly onto concrete or 1.5m (5ft) pushover on a tripod, eliminating costly repairs
  • Mask Mode - the GL612N has a virtual masking function that allows the laser beam to be turned off in up to 3 sides, avoiding false reading from glass reflections or interfering with other lasers on the same jobsite.


  • General Construction
    • Leveling concrete forms and footers
    • Vertical alignment such as wall, columns and form alignment (GL612N/GL622N)
    • Dual slope grading and steep slope excavating
    • Slope work for sports fields, tennis courts, driveways, parking garages, ramps
  • Pipe and Drainage Installations
    • Over-the-Top sewer and drainage pipe installations
    • Trenching and drainage


GL612N Laser

  • Leveling Accuracy: ±0.5mm/10m, 1/16" @ 100ft, 10 arc seconds
  • Grade Accuracy: ±1.0mm/10m, 1/8" @ 100ft, 20 arc seconds
  • Grade Temperature Drift Sensitivity: ±0.3mm/10m/1°C; 1/16" @ 310ft @ 1°F
  • Operating Diameter: Appr. 800m (2,600ft) with detector
  • Grade Range (Y, X-GL622N/GL622IR): ±25% both axes (not simultaneously)
  • Rotation: 300, 600, 750 RPM
  • Laser Type: 639nm (GL622IR: typ 830nm)
  • Laser Class: Class 2 (GL622IR: Class 1)
  • Self-Leveling Range: Appr. ±14°
  • Leveling Indicators: LCD indications and LED flashes
  • Radio Range (HL760): up to 150m (490 ft)
  • Power Source: NiMH battery pack
  • Battery Life: 35 hours NiMH (GL622IR: 40 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 & Waterproof: Yes IP67
  • Weight: 3.1kg (6.8 lbs)
  • Low Voltage Indication: LCD battery indicator
  • Low Voltage Disconnection: Unit shuts off
  • Warranty: 5 Years

RC602N Remote Control

  • Operating Range: up to 150m (490ft)
  • Power Source: 2 x 1.5V AA alkaline batteries
  • Battery Life: 130 hours
  • Dust & Waterproof: Yes IP66
  • Weight: 0.26kg (0.57 lbs)

HL760 Laserometer

  • Digital Readout Units: mm, cm, ft, in, frac in.
  • Reception Height: 127mm (5 in)
  • Six On-Grade Sensitivities:
    • Ultra Fine - 0.5mm (~1/32")
    • Super Fine - 1mm (~1/16")
    • Fine - 2mm (~1/8")
    • Medium - 5mm (~1/4")
    • Coarse - 10mm (~1/2")
    • Calibration Mode - 0.1mm (~1/64")
  • Battery Life (2 x AA): 60+ hours continuous operation
  • Auto Shut-Off: 30 minutes/24 hours
  • Operating Temp: -20°C to 50°C (-4°F to 122°F)
  • Dust & Waterproof: Yes IP67
  • Weight: 0.27kg (9.5oz)
  • Warranty: 3 Years "No Excuses"


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