Spectra Precision GL412N Single Grade Laser

Spectra Precision
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GL412N Single Grade Laser w/Vertical Alignment:  Datasheet

The automatic, self-leveling Spectra Precision® GL412N single grade laser is the most rugged, cost-effective lasers that do three jobs—level, grade, and vertical alignment. Even in harsh jobsite conditions, the GL412N delivers consistently reliable and accurate performance, enabling you to work faster and smarter.

The rugged GL412N laser can withstand drops of up to one meter (three feet) onto concrete and tripod tipovers up to 1.5 meters (five feet). This strength, combined with full weatherproofing and dustproofing, reduces downtime and lowers repair costs over the life of the product.

The GL412N laser system now includes the advanced HL760 Digital Readout (DRO) receiver that provides automatic Grade Match, PlaneLok and Fingerprint function.

Grade Match measures and displays the existing grade over unknown ground. As a consequence it eliminates time consuming and error prone calculations
PlaneLok automatically locks on to an existing horizontal elevation or vertical alignment point which eliminates all drift  or possibility of error due to improper calibration or weather.

The unique “Fingerprint” function only accepts the beam from the laser it is paired with.

The CR600 receiver is also an option when a machine mounted display elevation is required.

Features & Benefits

  • Menu driven user interface reduces learning time and eliminates complex button pressing to activate advanced features
  • RC402N radio remote control allows control of all laser functions from up to 330feet (or 100 meters
  • Maintains performance even in rainy, dusty and other harsh job site and weather conditions - IP66 environmental rating
  • Durable design reduces downtime due to drops and tripod tipovers
  • Automatic Grade Match eliminates time consuming and error prone calculation
  • Mask mode eliminates interference with other crews on the jobsite
  • Comes with choice of CR600 or HL760 receivers so you can choose the best option to suit your application


  • GL412N Grade Laser
  • HL760 Laser Receiver
  • C70 Adapter
  • 105516 Vertical Adapter for HL Receiver
  • RC402N Radio Remote Control
  • Q104234 NiMH Rechargeable Batteries
  • Worldwide Charger
  • Hard Case
  • 5 Year Warranty

GL412N/GL422N Specifications

  • Leveling accuracy1,3: ± 1.5 mm/30 m,
    • 1/16“ @ 100 ft, 10 arc seconds
  • Operating diameter1,2: appr. 800 m (2600 feet)
  • Grade range:
    • -10% to +15% (Dual Axes GL422N)
    • -10% to +15% (Single Axis GL412N)
  • Rotation: 300, 600 rpm
  • Laser type: red diode laser 650 nm
  • Laser class : Class 2, <3.4 mW
  • Self-leveling range: ± 5° (±9%)
  • Leveling indicators: LCD indications and LED flashes
  • Radio range (HL760): up to 100 m (330 ft)
  • Power source: 10.000 mAh NiMH battery pack
  • Battery life1: 35 hours NiMH; 50 hours alkaline
  • 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 - IP66
  • Weight: 3.1 kg (6.8 lbs)
  • Low voltage indication: LCD battery indicator
  • Low voltage disconnection: unit shuts off
  • Warranty: 5 Years

HL760 Digital Readout Receiver

  • Highly versatile receiver for basic and advanced
  • leveling and aligning applications
  • Works with GL412N/GL422N in automatic
  • Grade Match and PlaneLok applications
  • Key Features:
    • Digital readout of elevation
    • Exact distance from grade displayed
    • Anti-strobe sensor to prevent false reading from jobsite strobe lights
    • Large reception height to ease beam reception
    • Withstands a drop of up to 3 m (10 ft)
    • Fingerprint function - detects only the laser beam of the paired transmitter
  • User Benefits:
    • No need to go “on-grade” to measure;
    • Saves considerable time
    • Reduces rework by allowing remote monitoring
    • Increases reliability, accuracy and durability

RC402N Remote Control Specifications

  • Operating range: up to 100 m (330 ft)
  • Power source: 2 x 1.5V AA alkaline batteries
  • Battery life: 130 hours
  • Dust and waterproof: Yes - IP66
  • Weight: 0.26 kg (0.57 lbs)