Spectra Precision HV302GC-16 Complete Red Laser System
The Spectra Precision HV302GC-16 is a field-proven dual-axis rotating laser kit engineered for contractors who need one instrument to handle both horizontal grading and vertical layout without swapping tools between phases. This complete package ships with the CR700 digital grade readout receiver, RC402N wireless remote control, a tenths-graduated grade rod, and a heavy-duty tripod — giving your crew everything needed to go from rough grade to finish layout on a single mobilization.
System Overview & Jobsite Applications
Rotating red lasers remain the workhorse of grading and layout crews for good reason: reliable performance in a wide range of conditions at a price point that makes multi-instrument deployment realistic. The HV302GC-16 delivers a self-leveling horizontal plane accurate to ±1/16 inch at 100 feet and transitions to manual slope mode for single- or dual-axis grade work. The vertical rotation mode turns the instrument into a fast, accurate plumb and alignment reference for wall layout, column lines, and utility corridor staking. The included tripod brings the beam to a practical working height immediately, while the tenths rod integrates directly with the CR700 receiver for cut-and-fill readings without mental arithmetic in the field.
Key Specifications
- Laser Class: Class IIIa (Class 3R) red diode
- Self-Leveling Range: ±5 degrees automatic
- Grade Range: 0–25% single axis; 0–10% dual axis
- Accuracy: ±1/16 inch at 100 feet (1.5 mm at 30 m)
- Operating Range: Up to 2,000-foot diameter with CR700 receiver
- Rotation Speed: 150, 300, or 600 RPM selectable
- Battery Life: Up to 100 hours on D-cell alkaline batteries
- IP Rating: IP66 dust and water resistant
- Operating Temperature: -4°F to 131°F (-20°C to 55°C)
What's in the Kit
- Spectra Precision HV302GC laser transmitter
- CR700 Digital Grade Readout Receiver with magnetic mount
- RC402N wireless remote control (up to 200-foot range)
- Tenths-graduated grade rod for direct cut/fill readings
- Heavy-duty adjustable tripod
- D-cell battery pack and carrying case
Job Applications
Site Grading & Drainage: Set dual-axis slope for parking lots, athletic fields, and drainage swales. The CR700 receiver displays grade offset in real time so operators can maintain consistent fall without stopping to calculate.
Utility & Pipeline Work: Manual slope mode holds precise pipe grades on sewer, storm, and conduit runs. The tenths rod lets the crew verify invert elevation at each joint without a separate instrument.
Interior Finish & Trim: Switch to horizontal spin mode for suspended ceilings, door and window headers, and floor leveling. The RC402N remote lets one operator control the instrument from the work face without a second person at the tripod.
Column Lines & Wall Layout: Vertical mode projects a plumb rotating plane for tilt-up panel lines, masonry courses, and structural steel alignment across large floor plates.
Compatible Accessories
- CR700 Replacement Receiver
- RC402N Remote Control
- Spectra Precision Grade Rod (Tenths)
- Detector Holder & Clamp Set
- Heavy-Duty Tripod (Replacement)
- Spectra Precision Carrying Case
Related Guides
- How to Set Dual-Axis Slope with the HV302GC
- Choosing Between Red and Green Rotating Lasers
- Using a Grade Rod and Receiver for Cut/Fill Work
- Rotating Laser Calibration & Field Check Guide
Frequently Asked Questions
- Can the HV302GC-16 hold a grade in both directions simultaneously?
- Yes. The HV302GC supports dual-axis slope mode up to 10% in each axis at the same time, making it suitable for crowned road sections and complex drainage planes where cross-fall and longitudinal fall must both be set.
- What is the effective outdoor range of the CR700 receiver?
- The CR700 receiver is rated for use up to a 2,000-foot diameter working circle under normal outdoor conditions. Range can be reduced in bright direct sunlight; using the receiver's sunshield and selecting a higher rotation speed (600 RPM) helps maintain detection in those conditions.
- Does the RC402N remote work through walls or obstructions?
- The RC402N is a radio-frequency remote with approximately 200-foot line-of-sight range. It will typically work through light wood-frame walls, but signal can be blocked by reinforced concrete or metal panel construction. For interior work in those environments, position the transmitter with a clear path to the remote operator.
- Is this kit suitable for machine control or just hand grade work?
- The HV302GC-16 is optimized for hand grade and layout operations using the CR700 receiver and grade rod. It is not a machine-control laser; for dozer or motor grader blade control you would need a Spectra machine-control system such as the LL500 series paired with a compatible blade receiver.
