Spectra GL720 Dual Grade Laser
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Make the Grade with the Spectra GL720 Dual Grade Laser
The automatic self-leveling Spectra Precision® GL700 Series dual grade lasers help you precisely control difficult tasks like long-range, high accuracy elevation control and fine grading for major construction projects. The GL700 Series offers the most innovative collection of features available: Grade Matching, self-leveling, and PlaneLok to get you to grade faster and with more accuracy.
The dual grade laser is an easy-to-use tool that allows you to take accurate elevation measurements with grade up to 1500 ft (450 m) away using a receiver. The exclusive automatic alignment features allow for quick and easy setup. The exclusive temperature and grade compensation systems are designed for superior accuracy so that your grade laser can be used for general construction, machine-control, and applications requiring tight tolerances under all environmental conditions.
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Municipal and Government Customers
We love our municipal and government customers. If you need to request a quote or have alternative payment requirements, please visit our government customers page.
The Spectra GL720 Dual Grade Laser is available in several packages
The Spectra GL720 is available in three packages to offer versatility for the needs of your projects. If you’d like to create your own package, use the form on our “Government Customers” page to reach out to us, or give us a call: we’d love to build a custom package to suite your needs.
Applications for the Spectra GL720 Dual Grade Laser
- Grading and excavation
- Site preparation
- Road, runway, and landfill construction
- Agricultural land levelling and drainage
- Laser based machine control
- General construction vertical alignment such as anchor bolt and form alignment
- Sports fields, tennis courts, driveways and landscaping
Key Features of the GL720 Dual Grade Laser by Spectra Precision
- Better than 5 arc second servo deadband accuracy for demanding high accuracy requirements
- Active temperature compensation provides accurate stable results regardless of temperature changes
- Automatic self-leveling over the entire grade range simplifies setup and ensures repeatable accuracy
- Large displays make the numbers easy to read, even when set-up on a tall tripod
- Intuitive, simple controls make using the lasers easy to use and easy to learn
- Fully sealed, rugged aluminum housing and protective lens hood allow work in all weather conditions
- Machine Control compatible and works with all laser-based machine control systems
- Multiple rotation speeds - RPMs - allow for optimal machine control performance
- Long battery life and flexible power options keep the unit working throughout the day
- Grade Reverse mirrors the grade setting with the push of a button
- Field calibration makes it simple to check and adjust the calibration in the field at the laser.
- Advanced functions of the GL720 make it ideal for large-scale, high accuracy applications
- Systems come complete with receiver and rod clamp, NiMH rechargeable batteries and charger, and rugged waterproof carrying case
Advanced GL720 Features for Enhanced Productivity
Self-Leveling: Allows the GL412 Single Grade Laser to level itself along both axis. Save time and frustration at the set-up of your jobsite.
PlaneLok: Automatically locks on to an existing elevation or vertical alignment point which eliminates all drift or possibility of error due to improper calibration or weather
Spectra GL720 Dual Grade Laser Technical Specifications
GL720 Dual Grade Laser:
- Leveling Accuracy: 3/64in @100ft, 1.2mm @30m (8 arc seconds) (a), (b)
- Range Diameter: 3,000 ft (900m) (a), (c)
- Axis Grade Range X: -10 to +10%
- Axis Grade Range Y: -0.5% to +25%
- Grade Resolution: 0.001%
- Self-leveling Range: Up to ± 14°
- Laser Type / Class: 658nm IED Class 2 (GL720IR 785nm Class 1)
- Battery Life: 30hrs (a)
- Rotation Speeds: 300, 600, 900 rpm
- Water Resistant: Completely sealed and waterproof
- Size L x W x H: 7.75 x 10.0 x 11.75 (20 x 25 x 30 cm)
- Weight: 18.5 lbs. (8.4kgs)
- Warranty: 2 years
Receiver Specifications
- Operating Range: 1500ft (460m)
- Laser Detection Height: 5in / 12.7cm (HL700), 4.5in / 11.4 cm (CR600)
- Accuracy Selections: 5
- LED and LCD Indicators
- Digital Readout (HL700)
- Battery Life: 60+hrs (HL700), 100+hrs (CR600)
- Warranty: 3 years (HL700), 2 years (CR600)
(a) At 70° F / 21° C, (b) along the axis, (c) under optimal atmospheric conditions
