The Spectra Precision HV302-6 is a dual-axis red beam laser built for contractors who need a reliable, no-nonsense layout tool that performs equally well inside a wood-frame structure or outside on a grading job. Bundled with the CR700 detector, a grade rod clamp, and a heavy-duty carrying case, this package covers the full range of horizontal and vertical reference tasks from a single instrument.
Overview & Jobsite Applications
The HV302-6 projects independent horizontal and vertical beams simultaneously, so a framing crew can check stud plumb and ceiling height reference in one shot without repositioning the laser. The self-leveling pendulum compensates for out-of-level setups within ±5°, locking the beams on grade automatically and sounding an alert when the instrument is tipped beyond that range. On exterior sites, the CR700 receiver extends working range well beyond naked-eye visibility, letting operators set finish grade, verify pipe slope, and control fill elevation across open lots. The laser runs on standard D-cell batteries, keeping replacement costs low on long jobs.
Key Specifications
- Laser Class: Class II, 635 nm red beam
- Self-Leveling Range: ±5° automatic
- Horizontal Accuracy: ±3/32 in at 100 ft (±3 mm at 30 m)
- Working Range (naked eye): Up to 200 ft diameter
- Working Range (with CR700): Up to 800 ft diameter
- Rotation Speed: Dual fixed beams — no rotation (fan beam output)
- Battery: 4 x D-cell alkaline
- Battery Life: Up to 40 hours
- IP Rating: IP54 dust and splash resistant
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
- Tripod Mount: 5/8 in x 11 thread
What’s in the Kit
- Spectra Precision HV302 horizontal/vertical laser
- CR700 combination hand-held and rod-mounted detector
- Detector rod clamp and bracket
- 4 x D-cell alkaline batteries (pre-installed)
- Hard-shell carrying case
- Target card
- User manual and quick-start guide
Job Applications
Interior Framing & Partition Layout: Project the vertical beam down a run of stud walls to confirm plumb alignment across multiple bays. Use the horizontal beam as a continuous reference for blocking, ledger height, and ceiling track installation — no chalk line required.
Exterior Grade Control & Drainage: Mount the CR700 on a grade rod and walk the site. The receiver’s audio and visual grade indicators let one operator check fill, subgrade, and finish elevations across a full residential lot without a second person at the instrument.
Concrete Flatwork Reference: Set the horizontal beam at screed height and use it to guide strike-off elevation on slab pours, sidewalks, and flatwork where a rotating laser is impractical or unavailable on site.
Mechanical & Suspended Ceiling Grids: Hang the HV302 from a ceiling bracket or set it on a tripod to shoot a horizontal reference plane for suspended grid wire attachment points, ensuring a level ceiling field across large commercial bays.
Compatible Accessories
- CR700 Replacement Detector
- Spectra HL760 Alkaline Detector
- Heavy-Duty Dual-Clamp Grade Rod Bracket
- 8 ft Fiberglass Grade Rod
- Spectra TP-60 Tripod
- Spectra Precision Laser Target Card Set
Related Guides
- How to Set Up a Horizontal/Vertical Laser for Framing
- Using a Laser Detector for Exterior Grade Control
- Spectra HV302 vs. HV301: Which Laser Is Right for Your Job?
- Red Beam vs. Green Beam Lasers: What Contractors Need to Know
Frequently Asked Questions
- Does the HV302-6 rotate, or does it project fixed fan beams?
- The HV302 projects fixed fan beams — it does not rotate. The horizontal beam sweeps a full 360° plane and the vertical beam projects a 180° plane. This makes it ideal for reference tasks but not for elevation transfer over long exterior distances where a rotating laser would be more appropriate.
- Can I use the CR700 detector outdoors in bright sunlight?
- Yes. The CR700 is designed for outdoor use and relies on audio tones and an LED bar display rather than trying to see the red beam with the naked eye. It extends the usable range of the HV302 up to 800 ft diameter in full daylight conditions.
- What happens if the laser is bumped out of level on the job?
- The HV302 has an out-of-level alarm that sounds and stops beam projection when the instrument is tipped beyond its ±5° self-leveling range. Once the unit is repositioned within range, the pendulum re-levels automatically and the beams resume.
- Is the HV302-6 covered by a warranty?
- Spectra Precision backs the HV302 with a limited 1-year instrument warranty. Express Tools is an authorized dealer, so your purchase qualifies for full manufacturer warranty support. Contact us if you need warranty service or have a warranty claim.
