The SitePro 27-RL322GR is a professional-grade rotary laser engineered for contractors who need precise, repeatable slope control across demanding jobsite conditions. With independent dual-axis dial-in grade capability up to ±7.0% in both the X and Y planes, the RL322GR eliminates the need to reposition or reset the instrument every time grade changes—saving measurable time on drainage, parking lot, and finish grading operations where slope transitions are constant.
Rotary Laser Built for Grade Work
Unlike standard self-leveling lasers that only project a level reference, the RL322GR is purpose-designed for active grade-setting. The electronic self-leveling system compensates for minor settling or ground movement during pours and long setups, holding accuracy without operator intervention. An integrated laser plummet simplifies instrument positioning over a benchmark or control point, while the single-button grade-lock confirmation prevents accidental grade changes mid-operation. Whether you're cutting finish grade on a commercial parking lot, establishing drainage swales across a subdivision, or setting sub-base on a road project, the RL322GR gives your crew a reliable, repeatable grade reference from a single instrument setup.
Key Specifications
- Grade Range: ±7.0% on both X and Y axes simultaneously
- Self-Leveling Range: ±5°
- Accuracy: ±1/16 in. at 100 ft
- Operating Range: Up to 2,600 ft diameter with detector
- Rotation Speed: 150, 300, and 600 RPM selectable
- Laser Class: Class IIIa / 3R, 635nm visible red beam
- IP Rating: IP66 — dust-tight and protected against heavy water jets
- Power Source: Rechargeable NiMH battery pack; up to 60 hours runtime
- Operating Temperature: -4°F to +122°F (-20°C to +50°C)
- Mounting: Standard 5/8 in. x 11 TPI tripod thread
Key Features
- Independent dual-axis dial-in grade — set X and Y slopes simultaneously without re-leveling
- Electronic self-leveling with out-of-level alarm — protects grade accuracy if instrument is disturbed
- Integrated laser plummet for fast, precise setup over control points
- Three selectable rotation speeds for indoor visibility or long-range outdoor work
- Backlit LCD grade display for easy reading in direct sunlight or low-light conditions
- Remote control compatible for single-operator grade adjustment from the rod
- Rugged die-cast aluminum housing with IP66 weatherproofing
- Includes rechargeable battery pack, charger, carrying case, and operator manual
Job Applications
Parking Lot Construction: Set consistent cross-slope and longitudinal grade simultaneously to meet ADA drainage requirements and spec tolerances — without moving the instrument between passes.
Drainage & Swale Grading: Dial in precise fall rates on drainage channels, retention pond slopes, and roadside swales where even minor grade errors cause standing water or erosion failures.
Sub-Base & Road Grade: Establish accurate sub-base elevation control across long road sections. The 2,600 ft operating range keeps your crew working from a single setup on most residential and light commercial road projects.
Concrete Flatwork & Slab Pours: Lock in slab pitch for warehouse floors, equipment pads, and exterior slabs where positive drainage is a structural or code requirement.
Compatible Accessories
- SitePro Laser Detector / Receiver for RL322GR
- SitePro Remote Control Unit for Grade Lasers
- Heavy-Duty Aluminum Tripod — 5/8 in. x 11 TPI
- SitePro Grade Rod with Detector Clamp
- Replacement NiMH Battery Pack for SitePro Rotary Lasers
Related Guides
- How to Set Dual-Axis Grade with a Rotary Laser
- Rotary Laser vs. Pipe Laser: Choosing the Right Tool for Grading
- Using a Laser Detector to Extend Rotary Laser Range Outdoors
- SitePro Rotary Laser Comparison: RL300 Series Lineup
Frequently Asked Questions
- Can the RL322GR set grade on both axes at the same time?
- Yes. The RL322GR features independent dual-axis grade control, allowing you to dial in different slope percentages on the X and Y axes simultaneously — ideal for crown grades, cross-slopes, and compound drainage planes without repositioning the instrument.
- Does the RL322GR work outdoors in bright sunlight?
- The RL322GR is designed for outdoor use and includes a compatible laser detector/receiver that picks up the beam at distances up to 2,600 ft in full daylight conditions. The visible red beam is best used for indoor or low-light applications where a detector is not required.
- What happens if the laser gets bumped or the tripod shifts during a pour?
- The electronic self-leveling system continuously monitors instrument position. If the RL322GR is disturbed beyond its ±5° compensation range, an out-of-level alarm activates and the laser stops rotating — preventing your crew from working off a false grade reference.
- Is a remote control included with the RL322GR?
- The remote control is available as an optional accessory and is sold separately. It allows a single operator to adjust grade settings and rotation speed from the rod location without walking back to the instrument — a significant efficiency gain on large grading sites.
Frequently Asked Questions
Can the RL322GR set grade on both axes at the same time?
Yes. The RL322GR features independent dual-axis grade control, allowing you to dial in different slope percentages on the X and Y axes simultaneously — ideal for crown grades, cross-slopes, and compound drainage planes without repositioning the instrument.
Does the RL322GR work outdoors in bright sunlight?
The RL322GR is designed for outdoor use and includes a compatible laser detector/receiver that picks up the beam at distances up to 2,600 ft in full daylight conditions. The visible red beam is best used for indoor or low-light applications where a detector is not required.
What happens if the laser gets bumped or the tripod shifts during a pour?
The electronic self-leveling system continuously monitors instrument position. If the RL322GR is disturbed beyond its ±5° compensation range, an out-of-level alarm activates and the laser stops rotating — preventing your crew from working off a false grade reference.
Is a remote control included with the RL322GR?
The remote control is available as an optional accessory and is sold separately. It allows a single operator to adjust grade settings and rotation speed from the rod location without walking back to the instrument — a significant efficiency gain on large grading sites.