Versatile Automatic Grade Lasers for Level, Grade and Vertical Alignment

The Spectra Precision® Laser GL512 single grade (operating range 2000'diameter) and GL522 dual grade (operating range 2600' diameter) transmitters are rugged, cost-effective, automatic self-leveling lasers that do three jobs—level, grade, and vertical alignment.

Both the GL512 and GL522 include a 2-way, full-function remote control with a built-in back-lit grade display. You can do everything with the remote control that you can do at the laser keypad, up to 330 ft (100 m) away from the laser—even from the cab of a machine! The ability to make grade changes from anywhere on the job greatly reduces setup time and speeds operation. Verbal and visual communication errors are eliminated.

The GL512 and 522 Grade Lasers retain all the other advantages of the GL400 series lasers with additional features and benefits.

New wireless communication between the HL750 Laserometer and the transmitters provide automatic Grade Matching. Grade Matching allows measurement of unknown grade values between two points. PlaneLok is also available in both the horizontal and vertical planes. PlaneLok automatically locks the beam on the receiver and keeps it on grade. This eliminates all environmental factors that may induce an error.

Additionally, the HL750 Laserometer works with another HL750 for long range wireless remote display and monitoring.

Features:

• Automatic electronic self-leveling provides fast, easy horizontal level, grade, and vertical plumb setup
• Large compensated grade range from -10% to +15%
• Quick setups with the 2-way radio remote control, and single and dual grade application capability
• Electronic Leveling Vibration Filter dampens vibrations typically experienced on tall tripods, in high winds, or on high vibration jobsites
• No rework due to automatic temperature and grade compensation
• Grade Match displays the existing grade over unknown ground and eliminates time consuming and error prone calculations, time spent searching for grade plans, and over excavating
• 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
• Very rugged with low service costs; takes a 1 m (3 ft) drop on concrete
• Mask mode eliminates interference with other crews on the jobsite

Applications:

• General construction leveling such as forms, footers and pads
• Precision placement of concrete for critical specification surfaces over long distance and with laser controlled screeds (Automatic PlaneLok)
• Drift free general construction vertical alignment and plumb for anchor bolt installation, plus form, tilt up and curtain wall plumbing (Automatic PlaneLok)
• General construction grading and excavating
• Steep slope road embankments and ditch banks
• Sports fields, driveways, ramps and drainage

Highly versatile receiver for basic and advanced leveling and aligning applications

The Spectra Precision® Laser HL750 Laserometer is a highly versatile laser receiver for basic and advanced leveling and aligning applications. It is designed for general, concrete and site preparation contractors. The HL750 measures elevations across the site, and is ideal for use with any rotating transmitter.

The HL750 features a digital readout of elevation that provides a numeric display of ± 5 cm (± 2 inches). The readout is displayed on the large front and rear LCD's and shows exactly how far the elevation is from on-grade for fast and easy cut/fill readings. Accurate measurements can be made without moving the rod clamp, saving time and increasing productivity. Selectable units of measure can be displayed meeting your application - mm, cm, ft, in or fractional inches.
                                                                                                                                                                                       
A 12.7 cm (5 inch) reception height, more than double the industry standard, allows quick acquisition of the laser beam. An anti-strobe sensor prevents false readings from site strobe lights.

Radio communication allows working with another HL750 for long range remote display and monitoring capability. The HL750 also communicates with the GL512 and GL522 Grade Laser for PlanLok and Grade Matching capabilities.

The Laserometer is designed to survive the tough construction site conditions; it is totally waterproof and can withstand a drop of 3 meters (10 feet) onto concrete. The HL750 offers a 3-year "No Excuses" warranty.

Features and Benefits:

• Digital readout of elevation – not only will high or low arrows be displayed, but the exact distance from grade will be numerically displayed, which eliminates the need to get "on-grade" to make measurements.
• Large 12.7 cm (5 inch) reception height acquires the beam quickly and makes it easy to stay in the beam.
• Works with another HL750 for long range wireless remote display and monitoring – even when the second receiver is out of sight (up to 80 m or 260 ft.)
• Machine operators can monitor elevation shots taken by another person or foremen can monitor elevations and cut/fill readings from anywhere on the jobsite.
• Anti-strobe sensor stops construction strobe lights from setting off the receiver, and makes it easier to identify true laser beam signals.
• Multiple deadband setting allows adaptation to meet all your jobsite requirements.
• Dust and weatherproof housing withstands a drop of up to 3 m (10 ft) onto concrete for reduced downtime.
• Two clamp positions for cut/fill or excavation. Excavation mode puts more reception height and elevation information above grade for higher utilization in digging and staking applications.

Applications:

• Remote grade checking with cable free Remote Display
• Wireless monitoring of foundations and steel erections
• Risk free monitoring of tilt up wall position

Setting and checking jobsite elevation and depth for:

• Cut and fills
• General grading
• Foundations, forms, and footings
• Excavations