The Spectra Precision GL1425C-22 is a professional dual grade laser designed for contractors who demand accurate, simultaneous X and Y axis grade control across demanding jobsites. This complete kit ships ready for immediate deployment, including the HL760 digital grade rod receiver, RC1402N wireless remote control, an INCHES-graduated grade rod, a heavy-duty tripod, and a large protective carrying case that houses the entire system. Whether you're cutting pads, grading for drainage, or setting concrete forms, the GL1425C-22 delivers the dual-axis precision you need without the complexity of full 3D machine control systems.
Dual Grade Capability Built for Real Jobsite Conditions
The GL1425C-22 operates across a wide working range — up to 2,000 feet in diameter with the included HL760 receiver — making it equally effective on large earthwork pads and tight residential lots. The laser self-levels within a ±10% slope range on both axes simultaneously, eliminating the manual setup time that slows crews down. The rugged, sealed housing is built to handle dust, moisture, and the vibration common to active grading sites. With rechargeable battery operation providing a full day of runtime, you won't be swapping cells mid-shift.
Key Specifications
- Laser Type: Dual grade (X and Y axis simultaneous slope control)
- Grade Range: 0% to ±10% on both axes
- Grade Accuracy: ±1.5 arc seconds (single axis), ±2 arc seconds (dual axis)
- Working Diameter: Up to 2,000 ft with HL760 receiver
- Self-Leveling Range: ±10%
- Rotation Speed: 100, 300, 600 RPM selectable
- Power Source: Rechargeable battery pack (included), approx. 20-hour runtime
- Protection Rating: IP66 dust and water resistant
- Receiver: HL760 digital readout grade rod receiver
- Remote Control: RC1402N wireless remote, operates up to 300 ft
What's in the GL1425C-22 Kit
- Spectra Precision GL1425C dual grade rotating laser
- HL760 digital grade rod receiver with display
- RC1402N wireless remote control
- INCHES-graduated grade rod
- Heavy-duty adjustable tripod
- Rechargeable battery pack and charger
- Large protective carrying and storage case
- Operator's manual and documentation
Job Applications
Site Preparation & Mass Grading: Set simultaneous cross slopes and run slopes across large grading pads. The dual-axis control lets a single operator establish accurate finish grades without repositioning the instrument for each axis.
Drainage & Stormwater Slopes: Dial in precise directional slopes for parking lots, athletic fields, and retention pond floors where both X and Y drainage grades must be held tightly within spec.
Concrete Flatwork & Slab Forming: Use the HL760 receiver and grade rod to set form heights and screed rails to exact elevation, maintaining specified slab slope throughout pours on sloped-slab structures.
Utility & Pipeline Trenching: Control trench bottom grades along both the pipe run axis and the cross-slope, ensuring proper drainage fall without repeated instrument setups as the crew advances.
Compatible Accessories
- HL760 Replacement Grade Rod Receiver
- RC1402N Wireless Remote Control
- Spectra Precision Rechargeable Battery Pack
- Heavy-Duty Laser Tripod
- INCHES Grade Rod (Replacement)
- Spectra Precision Laser Detector Clamp Mount
Related Guides
- How to Set Up a Dual Grade Laser for Site Work
- GL1425C vs GL1450C: Which Dual Grade Laser Is Right for Your Crew?
- Using the HL760 Receiver for Accurate Grade Rod Readings
- Spectra Precision Rotating Laser Buyer's Guide
Frequently Asked Questions
- Can the GL1425C-22 control grade on both axes at the same time?
- Yes. The GL1425C is a true dual grade laser, meaning you can set independent slope values on both the X and Y axes simultaneously. This is critical for applications like parking lot drainage or athletic fields where two-directional slopes must be maintained across the entire surface.
- What is the working range of the GL1425C with the included HL760 receiver?
- With the HL760 digital grade rod receiver, the GL1425C-22 delivers a working diameter of up to 2,000 feet, making it suitable for medium to large commercial grading sites as well as residential work.
- Does this kit include everything needed to start working on the jobsite?
- Yes. The GL1425C-22 kit includes the laser unit, HL760 receiver, RC1402N remote, INCHES grade rod, tripod, rechargeable battery and charger, and a protective carrying case. No additional purchases are required to begin site work.
- Is the GL1425C-22 suitable for machine control applications?
- The GL1425C is optimized for grade rod and hand-grade operations rather than full automatic machine control. For blade-mounted or bucket-mounted machine control, Spectra Precision offers dedicated systems. However, many contractors use the GL1425C-22 effectively alongside grading equipment in manual or semi-automated workflows.
