Precision Laser & Instrument, Inc.

The Spectra Precision® Laser GL512 single grade and GL522 dual grade transmitters are rugged, cost-effective, automatic self-levelling 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 backlit 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.

Features

• Automatic electronic self-levelling 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 Levelling 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