Spectra GL-722

The Spectra GL-722 is a versatile rotary laser designed for fast and accurate horizontal levelling on construction, civil engineering, and groundworks sites. Its durable, site-ready build and straightforward operation make it ideal for contractors needing reliable height control.

Massive 25% Grade Range: Provides an industry-leading -5% to +25% slope capability in the Y-axis without needing slope blocks.
Precision 7″ Arc Accuracy: Delivers the highest level of grade repeatability, ensuring your benchmarks are dead-on for every setup.
High-Contrast Interface: Features a large, graphical LCD on both the unit and the RC-400 remote for crystal-clear status checks.
Ultra-Wide 1,100m Coverage: Specifically designed for massive excavation sites, offering over half a mile of reliable laser diameter.
Full-Function Radio Remote: Control grade, check battery, and adjust menu settings from up to 300m away while in the driver’s seat.

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Full Description

The Spectra GL-722 Laser Level is built for professionals who need dependable, high-performance levelling on a variety of construction and civil engineering projects. Lightweight and portable, it is suitable for tasks ranging from general site levelling to excavation, foundation preparation, and formwork alignment. The GL-722 features an automatic self-levelling system, providing a stable horizontal reference quickly after setup. This ensures consistent accuracy across the working area, even on uneven terrain, helping reduce setup time and improve productivity. Designed with a robust, weather-resistant housing, the GL-722 is capable of withstanding dust, moisture, and daily site handling. Its intuitive controls, including the option of the RC703 remote allow easy adjustment and operation, making it accessible to both survey professionals and site operatives. Supplied in a high visibility protective carry case, the Spectra GL-722 is ideal for site levelling, groundworks, drainage and trenching, formwork layout, and general construction height control. When paired with a compatible laser receiver, it can extend its working range, making it a practical choice for larger or open sites where reliable levelling is essential.

FAQs

What is the “Grade Match” function on the GL722?

Grade Match allows you to set up the laser between two known elevation points. The laser automatically searches for the receiver at the second point, calculates the existing grade, and displays it on the screen, saving significant time when matching new work to existing conditions.

What is the defining feature of the Spectra GL722?

The GL722 is a long-range, high-precision dual grade laser with a massive grade range and advanced radio remote capabilities. It is designed as the primary transmitter for automated machine control systems, providing an incredibly stable laser plane over vast distances for heavy machinery.

What is the maximum grade capability of this unit?

The GL722 offers one of the widest grade ranges available, with a Y-axis range from -0.500% to +25.000% and an X-axis range of +/- 10.000%. This makes it the ideal tool for steep embankments, specialised drainage, and complex landfill cell construction.

How far is the operating range for the laser and the remote?

The laser has a working diameter of up to 900 metres, while the long-range radio remote control works up to 225 metres away. This allows operators to change grades or settings from a machine cab or trench without needing to return to the tripod.

How does “PlaneLok” ensure accuracy on a busy site?

PlaneLok “locks” the laser beam onto a fixed position on the receiver, virtually eliminating errors from environmental factors. If any drift is detected due to wind or temperature changes, the system automatically pulls the beam back to the exact centre of the receiver.

Can I use the GL722 for “Automatic Axis Alignment”?

Yes. The GL722 can perform automatic alignment to a receiver, ensuring the cross-axis grade is perfectly perpendicular to your primary run. This is critical for maintaining high-accuracy grading on complex roading and runway projects.

Is the GL722 durable enough for heavy civil engineering projects?

The GL722 features a rugged, weatherproof cast-aluminium housing designed to withstand heavy plant vibrations and survive a 1-metre drop onto concrete. It is built to remain operational in the toughest UK site conditions.

Where can I have my Spectra GL722 calibrated or repaired?

PQS Survey Ltd provides manufacturer-trained service and calibration at our UK depots. Regular servicing is essential for this high-precision instrument to ensure the internal grade-drive motors are performing to their tight