Spectra GL422 Dual Slope Grade Laser

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Spectra GL422 Dual Slope Grade Laser
The Spectra Precision GL422 Dual Slope Grade Laser comes with the HL700 Laserometer; rod clamp; RC402 remote; 5 Ah NiMH batteries and charger.


The Spectra Precision GL422 Grade Laser is a cost-effective, automatic self-leveling laser that does three jobs - level, grade and vertical alignment with plumb. Features a 2-way, full-function remote control so you can make grade changes from anywhere on the job site for reduced setup time and faster operation. Sends a continuous, self-leveled 360-degree laser reference over your entire work area, and have a wide grade range so they can be used in a variety of slope applications. Fast, easy horizontal level, grade and vertical plumb setup with no manual leveling. Automatic temperature and grade compensation eliminates rework. The laser beam can be turned off electronically on up to 3 sides of your choice. This capability eliminates interference with other crews on the job site by keeping the beam from straying into other work areas. Features 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, including grade reverse on both axes, up to 100 m (330 ft) away from the laser - even from the cab of the machine. The GL422 offers two additional advanced features: pointing mode for “Over the Top” pipe laying applications and grade match where the laser can be used to measure the existing grade value between two known elevation points. This package also includes the HL700 Laserometer with highly visible LED display and dual sided LCD’s and an anti-strobe sensor. Digital readout of elevation shows how far from on grade without moving the rod clamp. Large 127 mm (5 inch) reception height acquires the beam quickly and keeps you in the laser beam. Extremely tough, can withstand a drop of 3 m (10 ft) onto concrete and has a 3 year warranty.
  • GL422 Single Slope Grade Laser
  • Laser type / class: <5 mW 635 nm, Class 3A/3R
  • Drop height on concrete: 1 m (3 ft)
  • Operating diameter (w/ HL700): 800 m, 2600 ft
  • Compensation method: H/V Electronic Self Leveling
  • Temperature compensation: Yes, every 5 °C
  • Level / vertical accuracy: 10 arc seconds 1.5 mm @ 30 m (1/16"" @ 100 ft)
  • Grade range: –10 to +15% Dual Axes
  • Grade accuracy: 0.015% 3 mm@30 m (1/8" @ 100 ft)
  • Grade resolution: 0.001% up to 9.999%, 0.01 % at higher grades
  • Grade compensation: Yes, every 5 °C
  • Remote control type: Full 2-way communication, operation and security lock with transmitter
  • Remote control range (w/ RC402): 100 m (330 ft) radius
  • Rotation speed: 0, 300, 600 RPM selectable
  • Transmitter battery life (4 x D NiMHs): 27 hours
  • RC402 battery Life (2 x AA Alkaline): 130 hrs continuous, 1 year under normal use
  • Mask mode: User selectable to any window 3 windows maximum
  • Standby mode: Yes
  • Display backlight: Yes, auto shutoff after 8 seconds
  • Mounting threads: 5/8" x 11 Horizontal and Vertical
  • Operating temperature: –20° to +50°C (–4° to 122°F)
  • Dimensions: 21L x 18W x 20H cm (8.3L x 7.1W x 7.9H in)
  • Weight: 3.1 kg (6.8 lb)
  • Warranty: 2 Years
  • HL700 Laserometer
  • On-Grade Sensitivities: Ultra Fine 0.5 mm / 1/32", Super Fine 1.0 mm / 1/16", Fine 2.0 mm / 1/8", Medium 5.0 mm / 1/4", Coarse 10.0 mm / 1/2", Calibration 0.1 mm / 1/64"
  • Readout Units of Measure: mm, cm, ft, in, fractional in
  • Operating Temperature: -20°C to 60°C (-4°F to 140°F)
  • Battery Life: 60+ hours continuous operation
  • Auto Shut-Off: 30 minutes/24 hours
  • Weight: 0.27 kg (9.5 oz)
  • Reception Height/Angle: 127 mm (5 in) / 90°
  • Anti-strobe sensor: Yes
  • Dust and Waterproof: Yes (IP67)
  • Warranty: 3 Years “No Excuses”

GL422 dual slope grade laser with HL700 Laserometer, rod clamp, RC402 remote, 5 Ah NiMH batteries and charger. Owner's Manual

Additional Information

Additional Information