Key Features & Benefits

• Fully automatic dual grade (X & Y axes) for accurate slope and drainage work

• High-accuracy performance for civil and construction applications

• Automatic self-leveling for fast setup and reduced errors

• Long working range with compatible laser receivers

• Simple keypad control for easy grade entry

• Height of Instrument (HI) alert helps prevent incorrect readings

• Rugged construction designed to withstand tough jobsite conditions

• IP66 rated – dustproof and water resistant for outdoor use

Technical Specifications

• Accuracy: ±1.5 mm at 30 m

• Working Range: Up to 800 m diameter with receiver

• Grade Range:

  • X-axis: ±10%

  • Y-axis: ±10%

• Self-Leveling Range: ±5°

• Rotation Speed: 600 RPM

• Power Supply: Alkaline batteries

• Battery Life: Up to 70 hours

• Environmental Rating: IP66

• Operating Temperature: -20 °C to +50 °C

Ideal For

• Earthworks and site preparation

• Drainage and trenching

• Concrete and formwork setup

• General construction leveling

• Dual-slope applications

What’s Included (Kit contents may vary)

• Spectra Precision GL412N Dual Grade Laser

• Laser Receiver

• Receiver Clamp

• Alkaline Batteries

• Heavy-duty Carry Case

Why Choose the GL412N?

The GL412N delivers reliable dual-grade accuracy in a simple, jobsite-ready package. With automatic grade control, rugged durability and easy operation, it is an excellent choice for contractors who need dependable performance without unnecessary complexity.