Spectra Precision Dual Grade Automatic Self Leveling Rotary Laser - GL1425C
The Spectra Precision GL1425C is a rugged and versatile dual grade laser designed for leveling, grading, and vertical alignment. It thrives in demanding job site conditions, consistently delivering reliable and accurate performance to boost efficiency. Equipped with built-in Bluetooth, it seamlessly integrates with the Spectra Precision Laser Remote App, eliminating the need for a separate remote control and enabling control via smartphone. The GL1425C is highly durable, capable of withstanding drops of up to 1 meter and tip-overs of tripods up to 1.5 meters. Its robust construction, along with full weatherproofing and dustproofing, minimizes downtime and repair costs over its lifespan. The GL1425C offers receiver options, including the HL760 Digital Readout receiver with automatic Grade Match for measuring unknown grades between two points over uneven terrain. Features PlaneLok, which locks onto existing elevations. The laser delivers impressive accuracy, with ±3.0 mm/30 m grade accuracy and ±0.9 mm/30 m/1°C temperature drift. It offers tilt-adjusted and non-tilt adjusted grade ranges, with rotation speeds of 300, 600, and 900 rpm. When paired with the HL760 receiver, the operational diameter is around 800 meters, while GradeMatch and PlaneLok work up to approximately 80 meters each. The laser is classified as Class 2, <3.4 mW, emitting a wavelength of 630-643 nm. Its self-leveling range spans ±5°, or ±8.7%. Teamed with the HL760 receiver, the radio range reaches up to 100 meters. The GL1425C operates within a temperature range of -20°C to +50°C and boasts an IP66 rating for dust and water resistance. It draws power from a 10000 mAh NiMH battery pack (included) or 4 x 1.5V D alkaline batteries (not included), offering around 45 hours of battery life. Charging takes under 10 hours, within a temperature range of 5°C to +40°C. The laser suits tripod attachments of 5/8 x 11, both horizontally and vertically.
Features
- Automatic self-leveling - Horizontal, vertical, and grade; Simplifies level, grade and vertical alignment setups. Increases reliability, accuracy and durability, easy to transport, easy to carry, easy to store
- Accuracy 1.5mm at 30m (1/16 inch at 100 ft); Bluetooth connection allows laser control with a smartphone; Leveling Accuracy 1.2 vertical, horizontal: ± 1,5 mm / 30 m; 1/16 in at 100 ft; 10 arc seconds
- Working range of 800m (2,600 ft) diameter; Height of Instrument Alert - unit stops rotating when jarred to avoid erroneous readings; Energy-efficient design offers long battery life
- Radio communication between the HL760 and CR700 digital receiver and the laser provides automatic Grade Matching and PlaneLok; Rotation selection of 300, 600 or 900 RPM, extremely durable and portable
- Remote control or remote control app allows operation of all laser functions from anywhere on the jobsite; Highly durable design enables the GL1425C to survive a drop up to 1m (3 feet) onto concrete; 5 Years warranty
What our Experts Think
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All‑in‑One Leveling & Grading Solution – The Spectra Precision GL1425C Dual Grade Automatic Self Leveling Rotary Laser combines automatic horizontal, vertical, and dual‑slope grade functions in one rugged unit, ideal for grading, excavation, vertical alignment, and general construction layouts.
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Exceptional Accuracy & Range – Offers ±1.5 mm @ 30 m (1/16″ @ 100 ft) accuracy with a working range up to 800 m (2,600 ft) when paired with a compatible receiver, reducing the need for frequent repositioning on large sites.
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Bluetooth & Remote Control Flexibility – Built‑in Bluetooth connectivity and app integration let crews adjust settings from afar, improving workflow and reducing on‑instrument adjustments.
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Advanced Grade Matching & PlaneLok – When used with digital receivers like the HL760, features such as Automatic Grade Matching and PlaneLok automate slope calculations and lock onto reference elevations for consistent precision.
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Rugged & Jobsite‑Ready Design – With IP66 dust/water resistance, drop protection up to 1 m (3 ft), and a durable housing, this laser withstands harsh environments and heavy use.
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Long Battery Life for Full Days – The rechargeable NiMH battery pack delivers extended runtime (~45 hours), keeping crews working longer with fewer interruptions.
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Professional Brand Reliability – From Spectra Precision, a trusted name in construction measurement tools, this laser is designed for contractors who demand accuracy, durability, and advanced functionality on complex projects.
Q&A
Q1: What is the Spectra Precision GL1425C used for?
A: The Spectra Precision GL1425C is a dual‑grade automatic rotary laser designed for precise grading, excavation, drainage, foundation leveling, and construction site layout.
Q2: What does “dual grade” mean?
A: Dual grade lets you set independent slopes on both X and Y axes, ideal for complex grading and drainage applications.
Q3: Is the GL1425C self‑leveling?
A: Yes. It features automatic self‑leveling for fast setup and reliable horizontal and slope control.
Q4: What is the working range?
A: With a grade laser receiver, it delivers a long working radius suitable for large outdoor sites and heavy‑duty construction.
Q5: How accurate is the GL1425C?
A: It provides high precision laser control for grading and leveling, ensuring consistent jobsite accuracy.
Q6: Is the GL1425C durable for construction environments?
A: Yes. Built for jobsite use, it features a rugged, weather‑resistant design that withstands dust, moisture, and rough handling.
Q7: Who is this laser best for?
A: It’s ideal for contractors, site superintendents, excavators, and survey professionals needing reliable, dual‑grade laser leveling on medium to large projects.
Maintenance Tips
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Clean the Laser Window: Wipe with a soft, lint-free cloth to remove dust, mud, or moisture; avoid harsh chemicals that can damage optics.
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Protect During Transport: Store in the carrying case to prevent drops, impacts, or vibration damage.
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Battery Care: Recharge or replace batteries as recommended; remove batteries if storing the unit long-term.
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Check Leveling Accuracy: Verify calibration regularly, especially after transport or accidental bumps.
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Avoid Extreme Conditions: Keep out of direct sunlight, high heat, or freezing temperatures to preserve electronics and self-leveling function.
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Maintain Mounts and Accessories: Inspect tripods, clamps, and mounts for stability before each use.
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Secure Setup: Always place the laser on a stable surface or tripod for accurate rotation and dual-grade measurements.
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