Spectra Precision CTO-GL710-10 Single Grade Laser package with CR600 Receiver

Overview

The Spectra Precision GL710 Single Grade Laser delivers professional-grade performance for contractors who demand accuracy and reliability on every job. This complete package pairs the rugged GL710 transmitter with the CR600 receiver, providing a turnkey solution for grading, trenching, and site preparation projects up to 3,000 feet in diameter.

Engineered for real-world jobsite conditions, the GL710 features automatic self-leveling along a single axis, allowing rapid setup and continuous operation even when ground vibrations occur from nearby equipment. The sealed, weather-resistant housing protects internal components from dust, moisture, and impacts, while the intuitive control panel enables quick adjustments without interrupting workflow.

The included CR600 receiver offers visual and audible grade indication with a large LED display visible in bright sunlight. Mountable on grade rods, excavator masts, or machine controls, this receiver converts the laser signal into actionable elevation data, helping operators maintain grade specifications throughout the workday. Together, this package eliminates guesswork and reduces callbacks on grading-intensive projects.

Key Specifications

• Leveling System: Single-axis automatic self-leveling
• Working Range: Up to 3,000 feet diameter (1,500-foot radius) with CR600 receiver
• Accuracy: ±3/16 inch at 100 feet (±3mm at 30m)
• Self-Leveling Range: ±5 degrees
• Grade Range: -10% to +10% in 0.1% increments
• Laser Class: Class 2 visible red beam (635nm)
• Power Source: Rechargeable NiMH battery (included)
• Battery Runtime: Up to 60 hours continuous operation
• Operating Temperature: -4°F to 122°F (-20°C to 50°C)
• Environmental Rating: IP66 dust and water resistant
• Receiver Display: 8-segment LED with on-grade indicator
• Receiver Detection Range: 6 inches standard; expandable with optional sensor plates

What's in the Kit

• GL710 Single Grade Laser Transmitter
• CR600 Laser Receiver
• Rechargeable NiMH battery pack
• AC wall charger with regional plug adapters
• Protective hard carrying case
• Remote control for slope adjustments
• Receiver clamp for grade rod mounting
• Operating manual and quick reference guide
• Calibration certificate

Job Applications

• Parking Lot and Pad Grading: Achieve consistent slopes for drainage on large flat surfaces where maintaining precise grade percentages prevents water pooling and ensures ADA compliance without constant manual checking.
• Utility Trenching: Maintain proper fall rates in sewer, storm drain, and drainage lines over extended distances, ensuring gravity flow works correctly the first time and avoiding costly re-excavation when inspectors verify slope.
• Building Pad Preparation: Establish level or sloped foundation pads quickly with a single reference plane, reducing surveying costs and allowing grading crews to work continuously without waiting for grade stakes.
• Agricultural Land Leveling: Create uniform grades for irrigation efficiency across fields, helping water distribute evenly and preventing erosion or dry spots that reduce crop yields.
• Sports Field Construction: Set accurate crown slopes from centerline to sidelines on football, soccer, and baseball fields where proper drainage directly impacts playability and turf health.
• Machine Control Integration: Interface with excavator and dozer guidance systems to automate blade control, increasing productivity while reducing operator fatigue on repetitive grading tasks spanning multiple acres.

Compatible Accessories

• HL700 Rod-Mounted Receiver – Enhanced range and sensitivity for deep excavation work
• RC601 Long-Range Remote Control – Adjust slopes from up to 800 feet away
• Heavy-Duty Detector Plates – Expand detection window on machine masts
• Telescoping Grade Rods – Aluminum and fiberglass options with metric/imperial markings
• Heavy-Duty Laser Tripods – Stable mounting for uneven terrain
• GL710 Machine Control Kits – Complete packages for excavator and dozer integration

Related Guides

• How to Choose the Right Grade Laser for Your Projects
• Laser Receiver Setup and Calibration Best Practices
• Understanding Slope Requirements for Drainage and Utilities
• Maintaining Laser Accuracy in Challenging Jobsite Conditions

FAQ

Can the GL710 be used for dual-slope applications like building foundations?

No, the GL710 is a single-grade laser that creates one consistent slope in one direction. For building foundations requiring slopes in multiple directions simultaneously, consider a dual-slope or rotary laser system. However, you can reposition the GL710 to establish different slopes for different phases of the same project.

What's the difference between the CR600 receiver and higher-end receiver models?

The CR600 offers a 6-inch detection window suitable for handheld grade checking and light excavation work. Premium receivers like the HL700 provide extended detection ranges (up to 10 inches), millimeter readouts, and enhanced durability for demanding machine-control applications. The CR600 included in this package handles most general grading tasks effectively.

How does the laser maintain accuracy when the ground vibrates from nearby equipment?

The GL710 features automatic self-leveling with compensator technology that continuously adjusts the laser plane when vibrations or minor movements occur. If the laser is moved beyond its self-leveling range (±5 degrees), it automatically shuts down and alerts the operator, preventing inaccurate readings rather than providing false grade information.

Can I use this laser in wet weather or dusty conditions?

Yes, the GL710 carries an IP66 environmental rating, meaning it's fully protected against dust ingress and can withstand powerful water jets from any direction. While it shouldn't be submerged, it operates reliably in rain, snow, and the dusty conditions typical of earthmoving projects. Always store in the protective case when transporting between sites.