Overview
The Spectra Precision LL500-10 Long Range Laser Package with CR600 is built for construction crews, site contractors, and earthwork professionals who need reliable elevation control across large job sites. This kit pairs the LL500's extended 2,600-foot diameter range with the CR600 rod-mounted receiver, designed specifically for slope work, embankment grading, and dynamic grade verification where handheld receivers fall short. The magnetic clamp system mounts directly to grade rods and metal shafts without brackets or adapters, letting operators take rapid readings while moving across changing terrain. Whether you're checking storm drain slopes, verifying pad elevations, or setting foundation benchmarks, this package delivers the range and mobility needed for productive site work.
Key Specifications
- Working Range: 2,600-foot diameter (1,300-foot radius)
- Accuracy: ±1/16 inch at 100 feet (±1.5mm at 30m)
- Self-Leveling Range: ±5 degrees
- Laser Wavelength: 635nm visible red beam
- CR600 Receiver Detection Range: 400 feet front-facing
- CR600 Accuracy: ±1/16 inch (±1.5mm)
- Display Type: Multi-LED with on-grade center indicator
- Mounting: Magnetic clamp with 1-inch to 1.25-inch rod capacity
- Power: LL500 runs on 4 D-cell alkaline batteries (100+ hours runtime); CR600 operates on 2 AA batteries
- Environmental Rating: IP66 dust/water resistance
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
What's in the Kit
- Spectra Precision LL500 rotating laser level
- CR600 rod-mounted laser receiver with magnetic clamp
- RC602 full-function remote control
- Rechargeable Ni-MH battery pack for LL500
- 110V AC wall charger
- Hard-shell carrying case with custom foam insert
- Operator manual and quick-start guide
- Calibration certificate and warranty documentation
Job Applications
- Storm Drain and Sewer Slope Verification: The CR600's rod-mount design lets you quickly check invert elevations and confirm consistent fall rates along trench runs without setting up string lines or repeatedly moving a tripod-mounted receiver.
- Building Pad Elevation Surveys: Walk the perimeter of cleared pads with the receiver on your grade rod, taking cut/fill readings every 25 feet to verify compliance with civil drawings before foundation crews mobilize.
- Embankment and Slope Grading: Monitor side-slope progress during fill operations by taking measurements directly on the working face, where the magnetic clamp keeps the receiver stable even on uneven terrain.
- Foundation Form Checks: Set elevation benchmarks around foundation perimeters and verify formwork height at multiple points without carrying extra equipment—the CR600 clamps to your rod and provides instant high/low feedback.
- Concrete Pour Elevation Control: Establish deck or slab elevations with the laser, then use the rod-mounted receiver to guide screed teams across the pour area, maintaining grade without handheld devices that tie up crew members.
- Parking Lot and Roadway Subgrade: Check base elevations across wide areas where the LL500's 1,300-foot radius eliminates mid-job laser moves, and the CR600's magnetic mount speeds up measurements compared to tripod-based workflows.
Compatible Accessories
Spectra Precision HL700 Handheld Receiver – Alternative receiver for general-purpose leveling and single-operator tasks
LL500 Alkaline Battery Tray – Field replacement for extended runtime without recharging
Heavy-Duty Aluminum Grade Rod – Professional-grade rod with tenths graduations for precision measurements
Laser Enhancement Glasses – Improve beam visibility in bright sunlight and long-range applications
Wall/Column Mount Bracket – Attach laser to vertical surfaces for interior elevation work
CR600 Replacement Clamp Kit – Spare magnetic mounting hardware for high-use environments
Related Guides
Rotating Laser Setup Best Practices for Site Work
LL500 vs. LL400: Which Spectra Laser Fits Your Range Needs?
Rod-Mounted vs. Handheld Laser Receivers: When to Use Each
Troubleshooting Laser Receiver Detection and Range Problems
Frequently Asked Questions
- What diameter rods does the CR600 magnetic clamp fit?
- The CR600 clamp accommodates grade rods and metal shafts from 1 inch to 1.25 inches in diameter, covering most standard construction-grade rods. The magnetic design grips securely to ferrous materials without requiring threaded brackets or adapter hardware.
- Can I use the LL500 for interior work like drop ceilings and floor leveling?
- Yes, the LL500 works well indoors for suspended ceiling installation, floor flatness checks, and partition alignment. For interior applications, consider pairing it with the HL700 handheld receiver for easier single-operator workflows, though the CR600 still functions effectively when mounted on rods or poles.
- How does the CR600 compare to a machine-mounted receiver for dozer or excavator grade control?
- The CR600 is a manual receiver designed for rod-based measurements, not machine control. For excavator or dozer automation, you'd need a dedicated machine control system with mast-mounted receivers. The CR600 excels at manual grade checking—verifying what machines have cut or providing benchmarks before automated grading begins.
- What's the battery life for the CR600 receiver in typical daily use?
- The CR600 runs approximately 60 hours on two AA alkaline batteries under normal conditions. In practice, this translates to several weeks of field use for most crews. The receiver includes an auto-shutoff feature after 30 minutes of inactivity to preserve battery life when left on during breaks or between measurements.
