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Spectra Precision LL300S-X21 Laser Package, HL760 Deluxe Reciever, TENTHS-Rod, HD Tripod and Small Case
±5° automatic compensation Range
Cover large layout jobs with a ±5° automatic compensation working reach.
±1/16 in at 100 ft Accuracy
Hold grade with a ±1/16 in at 100 ft accuracy rating.
Single-axis Slope Range
Handles 0% to 25% so crews can match design slopes.
Battery Life
Runs on Up to 110 hours (4x AA batteries) for jobsite flexibility.
Eliminates the grade checker
Grade checkers cost $600-800/day. A rotary laser setup pays for itself in weeks and works indefinitely.
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Genuine equipment sourced straight from manufacturer partners.
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Factory-fresh, authentic units with legitimate firmware.
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Kit Builder
Not sure what goes with this rotary laser?
Answer a few job questions and our Kit Builder assembles the full setup — receiver, rod, tripod, and case matched to your workflow.
Quick Answer
What is the Spectra Precision LL300S-X21?
The Spectra Precision LL300S-X21 Laser Package is a professional rotary laser level system designed for contractors requiring precision grading and layout work. It features automatic self-leveling within ±5°, works up to 2,000 ft in diameter, and delivers ±1/16 in accuracy at 100 ft—all with up to 110 hours of battery life. It's available from Express Tools.
What contractors use this rotary lasers for
Site Grading
Cut/fill earthwork, building pad preparation, base compaction
Concrete Flatwork
Slab pours, floor leveling, tilt-up panel layout
Machine Control
Grade control reference for motor graders and scrapers
Foundation Layout
Benchmark elevation transfer, footing forms, stem walls
Product Description
The Spectra Precision LL300S-X21 is a contractor-grade, single-slope rotary laser package engineered for professionals who need a complete, job-ready grading solution straight out of the box. Whether you're running finish grade on a commercial pad, setting slope for drainage, or controlling depth on a trenching job, this package has every piece of equipment you need to get on grade fast and stay there. The LL300S-X21 bundles the rugged LL300S self-leveling rotary laser with the advanced HL760 laser receiver, a 16-foot grade rod graduated in tenths, a heavy-duty aluminum tripod, and a protective carrying case — all from one of the most trusted names in precision measurement.
Built for Real Jobsite Conditions
The Spectra Precision LL300S is a field-proven workhorse used across excavation, site development, concrete flatwork, drainage, and underground utility installation. Its self-leveling mechanism compensates for minor setup inconsistencies automatically, saving setup time and reducing costly grade errors. With a single-axis slope capability of up to 25%, the LL300S is equally at home on dead-flat pads and sloped drainage channels. The unit's out-of-level alarm and automatic shutdown protect your work from errors if the tripod is disturbed mid-operation.
Key Specifications
- Model: Spectra Precision LL300S
- Leveling Method: Automatic self-leveling
- Leveling Range: ±5° automatic compensation
- Single-Axis Slope Range: 0% to 25%
- Working Range: Up to 2,000 ft diameter (with receiver)
- Laser Class: Class IIIa / 3R, 635nm red beam
- Rotation Speed: 150, 300, or 600 RPM selectable
- Accuracy: ±1/16 in at 100 ft
- Battery Life: Up to 110 hours (4x AA batteries)
- IP Rating: IP66 dust and water resistant
- Receiver: Spectra HL760 with remote control
What's in the LL300S-X21 Package
- Spectra Precision LL300S self-leveling rotary laser
- HL760 laser receiver with audible and visual grade indicators
- HL760 remote control for full laser operation from the rod
- 16-foot fiberglass grade rod graduated in tenths of a foot
- Heavy-duty aluminum tripod with adjustable legs
- Protective hard-shell carrying case
- 4x AA batteries and user documentation
Job Applications
Site Grading & Excavation: Establish and maintain cut/fill grades across large earthwork sites. The HL760 receiver's remote capability lets the operator adjust laser elevation without leaving the machine.
Concrete Flatwork & Slabs: Set precise screeding grades for warehouse slabs, parking decks, and residential pours. The ±1/16 in at 100 ft accuracy keeps finished surfaces within spec.
Drainage & Trenching: Apply single-axis slope for storm drain channels, french drains, and utility trenches. The 0–25% slope range covers virtually every drainage pitch required by civil plans.
Pad & Foundation Layout: Control subgrade elevations during building pad construction, ensuring uniform bearing depth across footings and foundation walls.
Compatible Accessories
Frequently Asked Questions
- Does the LL300S-X21 package support dual-axis slope?
- No. The LL300S is a single-axis slope laser, meaning it projects a grade on one axis at a time. For dual-axis slope applications — such as crowned roads or complex drainage pads — consider the Spectra Precision LL500 series. For most site grading, drainage, and flatwork applications, single-axis slope is exactly what's required.
- How far will the HL760 receiver work from the laser?
- The HL760 receiver is rated to detect the LL300S beam at distances up to 2,000 feet in diameter (1,000 ft radius) under typical outdoor conditions. Bright sunlight may reduce effective range, but the LL300S's output power is optimized to maintain reliable reception across large commercial sites.
- Can I operate the LL300S remotely from the grade rod?
- Yes. The HL760 receiver included in the X21 package incorporates a built-in remote control that communicates directly with the LL300S. You can adjust the laser's elevation, toggle rotation speed, and power the unit on or off without returning to the instrument — a major time saver on large grading operations.
- Is the LL300S-X21 package covered by a warranty?
- The Spectra Precision LL300S carries a standard Trimble/Spectra Precision limited warranty. As an authorized dealer, Express Tools ensures your purchase is fully covered. Contact us for warranty registration assistance and service center information if needed.
Why This Equipment
Auto Self-Leveling
Compensates for job site movement and setups — no manual leveling required.
Long Range
Reach 2,600+ ft with a receiver — covers large pads and site-wide grading without moving.
IP55+ Protection
Dust-tight and water jet resistant — built for outdoor construction in any weather.
Radio Remote
Change grade or elevation from the cab or anywhere on site without walking back.
The right rotary laser pays for itself in weeks.
A grade checker costs $600–800 per day. A quality rotary laser setup eliminates that cost indefinitely — and works faster. One operator with a good laser and receiver can cover ground that used to take a two-person crew.
The gap between a budget unit and a professional-grade one shows up in the field: self-leveling range on uneven pads, IP55+ protection through rain and dust, and radio remote control so you're not walking back to the instrument every time the job moves.
Express Tools is an authorized dealer with genuine, factory-fresh inventory and same-day shipping on in-stock units. We know this equipment and can answer spec questions before you order.
Specifications
Technical Specs
Manufacturer data and field-verified measurements.
| Model | Spectra Precision LL300S |
|---|---|
| Leveling Method | Automatic self-leveling |
| Leveling Range | ±5° automatic compensation |
| Single-axis Slope Range | 0% to 25% |
| Working Range | Up to 2,000 ft diameter (with receiver) |
| Laser Class | Class IIIa / 3R, 635nm red beam |
| Rotation Speed | 150, 300, or 600 RPM selectable |
| Accuracy | ±1/16 in at 100 ft |
| Battery Life | Up to 110 hours (4x AA batteries) |
| IP Rating | IP66 dust and water resistant |
| Receiver | Spectra HL760 with remote control |
| Self-leveling Range | ±5° automatic compensation |
| Grade Range | 0% to 25% |
Built for Spectra Precision equipment owners
Log every grade shot from this laser
Gradelog turns your rotary laser workflow into documented, defensible field records — grade shots, photos, and as-builts tied to each job.
- Grade shot logging with cut/fill
- Calibration reminders for this instrument
- AI field assistant for setup questions
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Spectra Precision LL300S-X21 Laser Package, HL760 Deluxe Reciever, TENTHS-Rod, HD Tripod and Small Case
$1365.00
Free 30 days with every Express Tools purchase
Your equipment. Your data. All in one place.
Gradelog is the field-execution platform built for grading and earthwork crews. Log grade shots, track cut/fill, document phases with photos, and generate as-built reports — from the cab to the office.
- Grade shots & cut/fill tracking per job
- Photo documentation by phase, task, and equipment
- As-built reports ready for inspector sign-off
- AI field assistant — troubleshoot on the jobsite
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