Professional Leveling Performance for Grading and Site Work
The Spectra Precision LL300S-47-NR is a complete rotary laser leveling system built for contractors who need dependable, repeatable accuracy across medium-range jobsites. Pairing the field-proven LL300S laser with the advanced HL760 Laserometer receiver and rechargeable battery system, this kit delivers everything a grading crew, civil contractor, or foundation team needs to get work done accurately and efficiently — right out of the case.
System Overview and Jobsite Applications
Designed for outdoor site work in challenging conditions, the LL300S-47-NR handles the full spectrum of horizontal leveling tasks encountered on active construction sites. Whether you are establishing a finished grade elevation across a large lot, setting batter boards for a foundation pour, or laying out drainage swales that need precise fall, this system provides the accuracy and detection range to work productively. The HL760 receiver extends your working radius well beyond what you can detect with the naked eye, letting rod crews work faster and farther from the instrument.
Key Specifications
- Accuracy: ±1/16 in. at 100 ft (1.5mm at 30m)
- Operating Range: Up to 2,000 ft diameter with HL760 receiver
- Self-Leveling Range: ±5 degrees automatic
- Rotation Speed: 600 RPM standard operation
- Dust and Water Protection: IP66 rated for harsh jobsite conditions
- Battery Runtime: Up to 100 hours per charge with included rechargeable pack
- Laser Class: Class IIIa / 3R visible red beam
- Tripod Mount: 5/8 in. x 11 threaded base
What's in the Kit
- Spectra Precision LL300S Self-Leveling Rotary Laser
- HL760 Laserometer Receiver with extended detection window
- Rechargeable NiMH battery pack and charger
- Carrying and storage case
- Operator's manual and quick-start guide
Job Applications
Site Grading and Earthwork: Use the LL300S with the HL760 on a grade rod to establish cut and fill elevations across large grading operations. The long detection range keeps the rod man working at full productivity without constant repositioning of the instrument.
Foundation Layout and Footings: Set consistent elevation benchmarks for footing forms and slab subbase work. The ±1/16 in. accuracy at 100 ft ensures your concrete crews are working to spec from the first pour.
Drainage and Pipe Slope: Establish precise invert elevations and confirm positive drainage grades for storm sewer, sanitary, and surface drainage layout. Consistent grade control reduces costly re-work and inspection failures.
Interior Flatwork and Suspended Ceilings: While optimized for outdoor range, the LL300S-47-NR also performs reliably on interior concrete flatwork, screed elevation control, and ceiling grid leveling in large commercial spaces.
Compatible Accessories
- Spectra HL760 Replacement Receiver
- Spectra HR320 Laser Rod / Grade Rod
- Spectra DG813 Laser Detector Clamp
- Heavy-Duty Tripod for Rotary Lasers
- Spectra Rechargeable Battery Pack Replacement
Related Guides
- How to Set Up a Rotary Laser for Site Grading
- LL300S vs LL300N: Which Spectra Laser Is Right for Your Crew?
- Using a Laser Receiver on a Grade Rod: Tips for Rod Crews
- Rotary Laser Maintenance: Keeping Your Instrument Accurate in the Field
Frequently Asked Questions
- What is the working range of the LL300S-47-NR with the included HL760 receiver?
- With the HL760 Laserometer receiver, the LL300S-47-NR provides a working diameter of up to 2,000 feet, making it suitable for most medium to large residential and light commercial grading projects.
- Does this kit include rechargeable batteries, or do I need to purchase them separately?
- This kit includes a rechargeable NiMH battery pack and the corresponding charger. You are ready to work right out of the case with no additional battery purchase required.
- Is the LL300S-47-NR rated for use in rain or dusty conditions?
- Yes. The LL300S carries an IP66 ingress protection rating, meaning it is dust-tight and protected against powerful water jets. It is designed to remain operational in typical outdoor jobsite weather conditions.
- Can the LL300S-47-NR be used for slope or grade applications?
- The LL300S is a self-leveling horizontal laser and is not designed for variable slope or grade percentage work. For slope-matching applications, consider the Spectra LL500 or a grade laser model. The LL300S excels at flat horizontal plane leveling at high accuracy.
Frequently Asked Questions
What is the working range of the LL300S-47-NR with the included HL760 receiver?
With the HL760 Laserometer receiver, the LL300S-47-NR provides a working diameter of up to 2,000 feet, making it suitable for most medium to large residential and light commercial grading projects.
Does this kit include rechargeable batteries, or do I need to purchase them separately?
This kit includes a rechargeable NiMH battery pack and the corresponding charger. You are ready to work right out of the case with no additional battery purchase required.
Is the LL300S-47-NR rated for use in rain or dusty conditions?
Yes. The LL300S carries an IP66 ingress protection rating, meaning it is dust-tight and protected against powerful water jets. It is designed to remain operational in typical outdoor jobsite weather conditions.
Can the LL300S-47-NR be used for slope or grade applications?
The LL300S is a self-leveling horizontal laser and is not designed for variable slope or grade percentage work. For slope-matching applications, consider the Spectra LL500 or a grade laser model. The LL300S excels at flat horizontal plane leveling at high accuracy.
