Spectra Precision GL422N


The automatic, self-leveling Spectra Precision® GL422N dual grade laser is the most rugged, cost-effective laser that will do three jobs—level, grade, and vertical alignment. Even in harsh jobsite conditions, the GL422N delivers consistently reliable and accurate performance,enabling you to work faster and smarter. It 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.


  • Menu driven user interface reduces learning time and eliminates complex button pressing to activate advance features
  • RC402N radio remote control allows control of all laser functions from up to 330feet (or 100 metres)
  • Maintains performance even in rainy, dusty and other harsh job site and weather conditions – IP66 environmental rating
  • Automatic Grade Match eliminates time consuming and error prone calculation
  • Mask mode eliminates interference with other crews on the job site
  • Comes with choice of CR600 or HL760 receivers so you can choose the best option to suit your application
  • Levelling concrete forms and footers
  • General construction vertical alignment and plumb such as anchor bolt and form alignment
  • Sports fields, tennis courts and driveways
  • Grading and excavating
  • Steep slope road embankments and ditch banks
  • Ramps and drainage


Levelling accuracy± 1.5 mm/30 m, 1/16“ @ 100 ft, 10 arc seconds
Operating diameterappr. 800 m (2600 feet)
Grade range-10% to +15% (Dual Axes GL422N)
Rotation300, 600 rpm
Laser typered diode laser 650 nm
Laser classClass 2
Self-levelling range± 5° (±9%)
Levelling indicatorsLCD indications and LED flashes
Radio range (HL760)up to 100 m (330 ft)
Power source10.000 mAh NiMH battery pack
Battery life35 hours NiMH; 50 hours alkaline
Operating temperature-20°C to 50°C (-4°F to 122°F)
Storage temperature-20°C to 70°C (-4°F to 158°F)
Tripod attachments5/8 x 11 horizontally and vertically
Dust and waterproofYes – IP66
Weight3.1 kg (6.8 lbs)
Low voltage indicationLCD battery indicator
Low voltage disconnectionUnit shuts off
Warranty5 Years