The Spectra Precision LL1505C-A is a professional-grade rotating laser level built for contractors who need dependable horizontal and single-axis slope reference across large job sites. With a 4,000-foot diameter working range, this package delivers the coverage and accuracy required for foundation layout, parking lot grading, drainage work, and full-scale site development — right out of the box.
Overview and Jobsite Applications
Engineered for durability and ease of use in the field, the LL1505C-A self-levels within its compensator range and provides a continuous 360-degree horizontal plane for elevation control. The manual slope capability allows operators to dial in a single-axis grade without specialized grade lasers, making it versatile enough to handle drainage slopes, ADA-compliant ramp layouts, and sloped slab pours. The alkaline battery system eliminates the need to manage charging cycles on the job site, keeping the tool operational through full work days without downtime.
Key Specifications
- Working Range: 4,000 feet (1,220 m) diameter with HL760 receiver
- Self-Leveling Range: ±5 degrees automatic compensator
- Accuracy: ±1/16 inch at 100 feet (±1.5 mm at 30 m)
- Manual Slope: Single-axis, adjustable via front panel
- Rotation Speed: 600 RPM (standard working speed)
- Power Source: 4 x D-cell alkaline batteries
- Battery Life: Up to 100 hours typical operation
- IP Rating: Weather-resistant housing for outdoor use
- Receiver Compatibility: HL760 digital readout receiver included
What's in the Kit
- Spectra Precision LL1505C rotating laser head
- HL760 digital laser receiver with mounting bracket and clamp
- 4 x D-cell alkaline batteries (pre-installed)
- Carrying case for transport and storage
- Operator's manual and quick-start guide
Job Applications
Foundation and Concrete Work: Establish a consistent horizontal reference plane around the full perimeter of a foundation pour. The LL1505C-A's accuracy and long range let crews check form heights and slab elevations from a single instrument setup, reducing layout time significantly.
Parking Lot and Asphalt Grading: Cover multi-acre paving projects with a single instrument position. Machine operators can mount the HL760 receiver on a grade rod or blade mast to maintain tight elevation tolerances across the full work area.
Drainage and Slope Work: Use the manual slope function to dial in positive drainage grades. Whether laying storm pipe inverts, grading swales, or ensuring ADA-compliant cross-slopes, the LL1505C-A gives crews a reliable grade reference without switching instruments.
Site Development and Earthwork: From rough grading through finish work, this laser handles the full lifecycle of a site project. Set it up once and let multiple crews check grades simultaneously across the job using additional HL760 receivers.
Compatible Accessories
- HL760 Replacement Laser Receiver
- CR600 Wireless Remote Control for LL1505C
- TP1 Tripod — Heavy-Duty Survey Grade
- Grade Rod with Receiver Clamp
- Alkaline D-Cell Battery 4-Pack
Related Guides
- How to Set Manual Slope with a Rotating Laser Level
- Rotating Laser Level Buying Guide for Contractors
- How to Use a Laser Receiver for Grade Control
- Spectra Precision LL vs. GL Series: Which Is Right for Your Job?
Frequently Asked Questions
- Does the LL1505C-A work outdoors in bright sunlight?
- Yes. The included HL760 digital receiver detects the laser beam in direct sunlight at distances up to 4,000 feet, where the beam would not be visible to the naked eye. For indoor use in controlled lighting, the beam is also visible at close range.
- Can this laser hold a slope, or is it horizontal only?
- The LL1505C-A includes manual single-axis slope capability. You can tilt the laser along one axis to establish a grade reference for drainage, ramp construction, or sloped slabs. It does not support dual-axis simultaneous grade.
- What batteries does the LL1505C-A use, and how long do they last?
- The unit runs on 4 standard D-cell alkaline batteries. Under typical field conditions at standard rotation speed, battery life reaches approximately 100 hours — enough for several full work weeks before a battery change is needed.
- Is the HL760 receiver compatible with other Spectra Precision lasers?
- The HL760 is designed for use with Spectra Precision rotating lasers and is compatible with a range of models in the LL and GL series. Check Spectra Precision's compatibility guide or contact Express Tools for verification with a specific model.
Frequently Asked Questions
Does the LL1505C-A work outdoors in bright sunlight?
Yes. The included HL760 digital receiver detects the laser beam in direct sunlight at distances up to 4,000 feet, where the beam would not be visible to the naked eye. For indoor use in controlled lighting, the beam is also visible at close range.
Can this laser hold a slope, or is it horizontal only?
The LL1505C-A includes manual single-axis slope capability. You can tilt the laser along one axis to establish a grade reference for drainage, ramp construction, or sloped slabs. It does not support dual-axis simultaneous grade.
What batteries does the LL1505C-A use, and how long do they last?
The unit runs on 4 standard D-cell alkaline batteries. Under typical field conditions at standard rotation speed, battery life reaches approximately 100 hours — enough for several full work weeks before a battery change is needed.
Is the HL760 receiver compatible with other Spectra Precision lasers?
The HL760 is designed for use with Spectra Precision rotating lasers and is compatible with a range of models in the LL and GL series. Check Spectra Precision's compatibility guide or contact Express Tools for verification with a specific model.
