Overview
The Spectra Precision LL500-11 Long Range Laser Complete Package serves grading contractors, site excavation crews, and utility installers who need both mobility and precision across large jobsites. This complete system pairs the self-leveling LL500 rotary laser with the CR600 rod-mount receiver and a tenths-graduated measuring rod, enabling crews to transition seamlessly from fixed-position grade control to mobile elevation checks without changing equipment. The tenths-scale rod eliminates fractional conversions in the field, reducing calculation errors when establishing footings, checking excavation depths, or verifying drainage slopes. With 1,600-foot diameter range and ±1/16-inch accuracy at 100 feet, this package handles everything from building pad preparation to pipeline trenching, while the included alkaline battery tray and rechargeable option provide flexible power management for multi-day projects.
Key Specifications
- Leveling Range: ±5 degrees self-leveling
- Working Diameter: 1,600 feet (800-foot radius) with CR600 receiver
- Accuracy: ±1/16 inch at 100 feet (±1.5mm at 30m)
- Rotation Speed: 600 RPM (Class 2 visible red beam)
- Slope Capability: Manual X and Y-axis slope in any direction
- Rod Graduations: Tenths scale (0.1 foot increments)
- Receiver Accuracy: ±1/16 inch (±1.5mm) in all detection modes
- Power Options: Alkaline batteries (included) or rechargeable NiMH (sold separately)
- Operating Time: 60+ hours on alkaline D-cells
- Environmental Rating: IP66 dust and water resistance
- Operating Temperature: 20°F to 122°F (-7°C to 50°C)
What's in the Kit
- Spectra Precision LL500 self-leveling rotary laser
- CR600 rod-mount laser receiver with clamp
- Tenths-graduated measuring rod (extends to 15 feet)
- Laser-mounted tripod base with 5/8-11 thread
- Alkaline battery tray (D-cells not included)
- RC601 single-button remote control
- Hard-shell carrying case with custom foam inserts
- Operator manual and quick reference card
- Two-year manufacturer warranty
Job Applications
- Building Foundation Layout: The tenths rod eliminates fraction-to-decimal conversions when setting footing elevations from benchmark points, while the 800-foot working radius covers entire residential and light commercial building pads from a single laser setup.
- Excavation Depth Verification: The CR600 rod-mount receiver allows operators to walk cut areas and verify depths quickly without waiting for a dedicated instrument operator, reducing equipment idle time and keeping excavators productive throughout the day.
- Parking Lot and Driveway Grading: Manual slope capability in any direction establishes drainage planes for asphalt and concrete surfaces, with the receiver's audible beep-on-grade feature allowing finishing crews to work without constantly viewing the display.
- Utility Trench Slope Checking: Mobile rod checks along sewer and storm drain trenches confirm consistent fall rates between manholes, with tenths graduations matching civil plan stations and inverts specified in decimal format rather than fractional inches.
- Agricultural Land Leveling: The long-range capability and dual-slope function support precision land plane operations across large fields, with the rugged construction withstanding dusty conditions during soil preparation and finish grading.
- Concrete Slab Elevation Control: Fixed-position setup with the tripod base provides stable reference for screed operators, while the same equipment transitions to mobile checking during final troweling without breaking down the laser setup.
Compatible Accessories
Spectra Precision Rechargeable NiMH Battery Kit – Eliminates disposable battery costs on daily-use projects
Heavy-Duty Fiberglass Grade Rods – Alternative rod options with different graduation styles
Universal Laser Detector Clamps – Replacement clamps for rod mounting
Flat-Top Aluminum Tripods – Elevate laser above obstructions for better line-of-sight
Laser Targets and Machine Control Accessories – Expand system capabilities for equipment mounting
Related Guides
How to Field-Check Rotary Laser Accuracy
Tenths vs. Inches Grade Rods: Which Scale for Your Work?
Maximizing Laser Range with Receiver Detectors
Troubleshooting: Laser Receiver Not Detecting Beam
Frequently Asked Questions
- Can the LL500 be used for single-axis slope without setting dual slopes?
- Yes, the LL500 allows independent X-axis or Y-axis slope adjustment while leaving the perpendicular axis level. Simply adjust one slope knob while leaving the other at zero, ideal for establishing consistent fall on drainage swales or approach ramps without complex dual-plane calculations.
- What's the advantage of tenths graduations versus fractional inch rods?
- Tenths rods display elevations in 0.1-foot increments (1.2 feet reads directly as "1.2" rather than converting to "1 foot 2-3/8 inches"), matching how civil drawings, GPS coordinates, and surveyor benchmarks specify elevations. This eliminates field conversion errors and speeds up grade-checking on engineered sites where plans use decimal dimensions.
- How does the CR600 receiver work differently than a handheld detector?
- The CR600 clamps directly to the grade rod, keeping both hands free to hold the rod plumb while reading elevation. Handheld detectors require one hand to hold the detector and one for the rod, making stable readings more difficult. The rod-mount configuration is faster for repetitive elevation checks across large areas.
- Does this package include everything needed to start working immediately?
- You'll need to supply four D-cell alkaline batteries for the laser (the tray is included). Everything else—receiver with batteries, rod, tripod base, remote control, and carrying case—comes ready to use. The rechargeable battery option is sold separately but recommended for daily professional use to reduce operating costs.
