Overview
The Spectra Precision LL300S-37 Laser Complete Package is engineered for contractors, site developers, and surveyors executing metric-based construction projects or working on international job sites. This turnkey system combines Spectra's proven LL300S self-leveling rotary laser with the precision HL760 digital receiver, professional-grade tripod, and metric-calibrated leveling rod—eliminating the need to source components separately or convert measurements in the field. Ideal for grading, excavation, foundation work, and drainage applications where metric specifications are mandatory, this package delivers ±1/16-inch accuracy at 100 feet with full automatic leveling across slopes up to 10%. The HL760 receiver extends working range to 2,600 feet diameter in challenging visibility conditions, while the included metric rod streamlines elevation work on projects using SI units. Whether you're a U.S. contractor bidding international work, supporting metric-specification municipal projects, or operating in markets where metric is standard, this complete package provides survey-grade performance without the complexity or cost of traditional rotating laser systems.
Key Specifications
- Leveling System: Fully automatic self-leveling, horizontal and vertical operation
- Leveling Range: ±5° (10% grade capability)
- Accuracy: ±1/16 inch at 100 feet (±1.5mm at 30m)
- Working Diameter: 2,600 feet (800m) with HL760 receiver
- Rotation Speed: 600 RPM (standard) for increased visibility
- Beam Type: Single-grade horizontal and vertical laser
- Power Source: Rechargeable NiMH battery or alkaline D-cells
- Battery Life: Up to 60 hours on single charge
- Receiver Type: HL760 digital LCD display with graphic positioning
- Receiver Accuracy: ±1/16 inch (±1.5mm) digital detection
- Receiver Channels: Front and back sensors with multi-frequency detection
- Rod Graduations: Metric calibration (centimeters/millimeters)
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
- Dust/Water Protection: IP66 rating (laser transmitter)
- Drop Survival: 1 meter onto concrete
- Warranty: 3-year manufacturer warranty on laser and receiver
What's in the Kit
- LL300S Self-Leveling Rotary Laser Transmitter
- HL760 Digital Laser Receiver with Clamp
- Rechargeable NiMH Battery Pack for Laser
- AC Battery Charger with Multi-Voltage Support
- Professional Heavy-Duty Aluminum Tripod
- Metric-Calibrated Grade Rod (telescoping)
- Remote Control for Laser Functions
- Hard-Shell Carrying Case for Laser
- Soft Case for Receiver and Accessories
- Laser Safety Glasses (red enhancement)
- Operating Manual and Quick-Start Guide
- Calibration Certificate
Job Applications
- Site Excavation and Grading: The 2,600-foot working diameter with HL760 receiver covers large building pads, parking areas, and development sites without repositioning, while metric rod graduations match civil engineering drawings specified in SI units—eliminating conversion errors that delay mass grading operations.
- Foundation and Footing Layout: Automatic self-leveling maintains ±1/16-inch accuracy across uneven terrain during formwork setup, while vertical beam capability allows precise elevation transfer from benchmarks to foundation corners on metric-dimensioned architectural plans common in international design standards.
- Concrete Slab Preparation: The 600 RPM rotation speed provides highly visible reference plane for screed rail setup and subslab utility trenching, with metric rod enabling direct comparison to architectural floor elevations without mathematical conversion—critical for tolerance-sensitive suspended slabs and post-tension decks.
- Drainage and Utility Installation: Continuous slope monitoring during pipe laying maintains designed gradients for gravity-flow systems, while the HL760's front/back sensors allow single-operator grade checking in trenches—particularly valuable when utility specifications reference metric invert elevations and pipe class ratings.
- International and Government Projects: Complete metric measurement system satisfies contract requirements for federal facilities, military installations, and export construction where U.S. customary units are prohibited, with calibration certificate providing documentation for quality control submissions and third-party inspection approval.
- Curb and Paving Operations: Horizontal laser reference eliminates stringline setup for curb machines and grade checking, with extended battery life supporting full-shift operation during continuous paving, while metric graduations match typical roadway design standards in international markets and metric-specification DOT projects.
Compatible Accessories
HL750 Economy Laser Receiver | RC601 Long-Range Remote Control | Extended Capacity Battery Pack | Universal Detector Clamp with Fine Adjustment | Elevating Tripod for Deep Excavation | Magnetic Laser Target Plate | Ceiling and Wall Mount Bracket
Related Guides
Rotary Laser Setup and Field Calibration Procedures | LL300S vs LL400 Series Comparison: Which Spectra Laser for Your Application | Working with Metric Specifications on Construction Projects | Troubleshooting Laser Receiver Detection and Range Issues
Frequently Asked Questions
- Can this laser be used on standard U.S. projects with imperial measurements, or is it metric-only?
- The LL300S laser itself works universally—it projects a level reference plane regardless of measurement system. Only the included grade rod is metric-calibrated. You can use the laser with any imperial (feet/inches) rod you already own, making this package fully functional for both metric and standard U.S. projects. Many contractors purchase this kit specifically for its versatility when they work both domestic jobs and occasional metric-specification projects, keeping both rod types available.
- What's the actual working range in typical construction site conditions with dust and bright sunlight?
- The 2,600-foot diameter specification represents maximum range with the HL760 receiver in ideal conditions. In practical job site environments with ambient dust and full sunlight, expect reliable detection at 1,200-1,800 feet diameter, which still covers most building sites without repositioning. For extended range in bright conditions, the included laser glasses enhance beam visibility for manual alignment tasks. The HL760's digital filtering technology provides better sunlight performance than economy receivers, maintaining detection where basic models lose signal.
- How does the automatic leveling work if the tripod settles during the day on soft ground?
- The LL300S continuously monitors its level status using internal compensators. If the tripod settles beyond the ±5° self-leveling range, the laser automatically stops rotating and emits an audible alert, preventing you from working to an out-of-level reference. Within the 5° range, it automatically re-levels in real-time. This safety feature is critical for all-day operation on compacting fill or wooden formwork that shifts—you'll know immediately if releveling is required rather than discovering elevation errors during inspection.
- Is the HL760 receiver compatible with other laser brands, or only Spectra equipment?
- The HL760 is a universal laser receiver that detects rotating laser beams from any manufacturer operating on standard frequencies—including Topcon, Leica, Trimble, and Johnson levels. You're not locked into Spectra-only systems. This interoperability is valuable on jobs where multiple contractors use different laser brands or when renting backup equipment. The receiver's multi-channel detection automatically identifies beam characteristics, and the graphic LCD display functions identically regardless of laser brand, making it a versatile addition to any tool fleet.
