The Spectra Precision LL300S-82-PRO delivers the same rugged, field-proven performance as the LL300S platform in a complete package configured for contractors who work in fractional-inch measurements. Whether your crew reads grade stakes in inches or your project specs call for inch-based tolerances, this kit eliminates conversion headaches on the jobsite and keeps everyone working in the same unit language from setup to finish grade.
Package Overview & Jobsite Applications
The LL300S-82-PRO is purpose-built for contractors operating on civil grading, site development, concrete flatwork, drainage, and landscaping projects where inch-scaled measurement is the regional or client-mandated standard. The self-leveling single-slope red-beam laser establishes a precise horizontal reference plane across open job sites, and the included HR320 machine-control-compatible receiver extends working range even in bright daylight conditions. The inch-graduated grade rod means your rod man reads cuts and fills directly without mental math or conversion tables — a practical advantage when you have mixed-experience crews working under deadline.
Key Specifications
- Model: Spectra Precision LL300S-82-PRO
- Laser Class: Class IIIa (Class 3R), Red Beam Self-Leveling Range: ±5° automatic compensation
- Accuracy: ±1/16 in at 100 ft (±1.5 mm at 30 m)
- Working Range (diameter): Up to 2,600 ft (800 m) with HR320 receiver
- Rotation Speed: 0, 150, 300, 600 RPM selectable
- IP Rating: IP66 — dust-tight and water-jet resistant
- Battery Life: Up to 100 hours (rechargeable NiMH pack included)
- Rod Graduation: Inch-scaled (fractional inch) for direct cut/fill reading
- Receiver: Spectra Precision HR320, compatible with machine control
What's in the Kit
- LL300S Rotary Laser: Self-leveling single-slope red-beam unit with selectable rotation speeds
- HR320 Laser Receiver: Digital readout, audible/visual grade indication, machine-mount compatible
- Inch-Scaled Grade Rod: Fractional-inch graduations for direct measurement without conversion
- Heavy-Duty Tripod: Contractor-grade aluminum tripod with wide leg spread for stable setup on uneven terrain
- Rechargeable Battery Pack & Charger: NiMH rechargeable system with AC charger included
- Carrying Case: Molded protective case for transport and storage of all kit components
Job Applications
- Site Grading & Earthwork: Establish and check finish grade elevations across large open pads using the HR320 on a grade rod — ideal for operators and rod men working in fractional-inch tolerances specified by civil engineers.
- Concrete Flatwork & Slab Layout: Set screeds and verify slab elevation with inch-precision, ensuring compliance with floor flatness specs without converting decimal-foot readings.
- Drainage & Swale Construction: Confirm positive drainage slopes and swale grades during rough and finish grading phases where inch-based fall-per-foot calculations are standard in the field.
- Landscaping & Hardscape: Grade lawns, patios, retaining wall footings, and paver bases accurately using a familiar inch-measurement system that landscape crews can apply without specialty training.
Compatible Accessories
Related Guides
Frequently Asked Questions
- What is the difference between the LL300S-82-PRO and the LL300S-81-PRO?
- The primary difference is the grade rod included in the kit. The -81 model comes with a tenths-foot decimal rod, while the -82-PRO includes an inch-scaled rod with fractional-inch graduations. The laser unit, HR320 receiver, tripod, and battery system are identical between both packages. Choose -82 if your crew, region, or client specifications use fractional-inch measurements.
- What working range can I expect with the HR320 receiver on open sites?
- Under normal daylight conditions, the HR320 receiver extends the effective working diameter to approximately 2,600 ft (800 m). Range will be reduced in direct, intense sunlight or if there are obstructions between the laser and receiver. For most grading and flatwork applications, the range comfortably covers large commercial pads without repositioning the instrument.
- Is the LL300S-82-PRO suitable for use with machine control systems?
- The HR320 receiver included in this package is compatible with basic machine control mast mounting via standard brackets (sold separately). It provides audible and visual grade indication that many grade control systems can interpret. For full automated machine control integration with motor graders or scrapers, verify compatibility with your specific machine control brand before purchase.
- How long does the rechargeable battery pack last on a full charge?
- Spectra Precision rates the included NiMH rechargeable battery pack for up to 100 hours of continuous operation on a single charge at standard rotation speed. Battery life may vary based on rotation speed setting and ambient temperature. The kit includes an AC charger, and the laser also accepts standard alkaline D-cell batteries as a backup power option in the field.
Frequently Asked Questions
What is the difference between the LL300S-82-PRO and the LL300S-81-PRO?
The primary difference is the grade rod included in the kit. The -81 model comes with a tenths-foot decimal rod, while the -82-PRO includes an inch-scaled rod with fractional-inch graduations. The laser unit, HR320 receiver, tripod, and battery system are identical between both packages. Choose -82 if your crew, region, or client specifications use fractional-inch measurements.
What working range can I expect with the HR320 receiver on open sites?
Under normal daylight conditions, the HR320 receiver extends the effective working diameter to approximately 2,600 ft (800 m). Range will be reduced in direct, intense sunlight or if there are obstructions between the laser and receiver. For most grading and flatwork applications, the range comfortably covers large commercial pads without repositioning the instrument.
Is the LL300S-82-PRO suitable for use with machine control systems?
The HR320 receiver included in this package is compatible with basic machine control mast mounting via standard brackets (sold separately). It provides audible and visual grade indication that many grade control systems can interpret. For full automated machine control integration with motor graders or scrapers, verify compatibility with your specific machine control brand before purchase.
How long does the rechargeable battery pack last on a full charge?
Spectra Precision rates the included NiMH rechargeable battery pack for up to 100 hours of continuous operation on a single charge at standard rotation speed. Battery life may vary based on rotation speed setting and ambient temperature. The kit includes an AC charger, and the laser also accepts standard alkaline D-cell batteries as a backup power option in the field.