Trimble Spectra Precision GL722 Dual slope grade laser for construction leveling w/ remote & detector

Dual-Slope Grade Control with Long-Range Remote Precision

The Trimble Spectra Precision GL722 is a dual-slope, automatic grade laser engineered for high-accuracy elevation and slope control on demanding job sites. With its RC703 two-way radio remote, operators can set, align, and adjust grade values from the cab or ground up to 150 m (500 ft) away. The included HL450 laserometer provides digital grade feedback for precise readings in fine or coarse accuracy modes. This Refurbished kit is function-tested and field-ready, including the transmitter, remote, receiver, charger, and rugged transport case.

Why It Helps

• Single-operator setup using long-range two-way communication between transmitter and remote.
• Automatic Axis Alignment and Grade Match Mode reduce setup time and eliminate manual errors.
• PlaneLok locks the laser beam to a fixed elevation, virtually eliminating beam drift due to temperature or wind.
• Rugged waterproof housing with self-leveling capability up to 25 % ensures repeatable accuracy across long runs.

Key Highlights

• Dual-slope performance: ±10 % (X-axis) and −0.5 % to +25 % (Y-axis).
• Automatic self-leveling and grade resolution of 0.001 % for fine precision.
• Selectable rotation speeds (300 / 600 / 900 rpm) for optimal visibility and accuracy.
• Active temperature compensation ensures stable beam accuracy in changing environments.
• 900 m (3,000 ft) operating range with visible beam and large backlit LCD display.

RC703 Remote Control

The RC703 is a two-way, long-range 2.4 GHz radio remote that allows complete control of all GL722 functions from inside the machine cab or anywhere on site.

• Wireless control range up to 225 m (750 ft) general, 150 m (500 ft) for Auto Alignment.
• Supports Grade Match, PlaneLok, Automatic Axis Alignment, Grade Reverse, and Grade Bump functions.
• Backlit LCD display with large alphanumeric readout for real-time feedback.
• Operates for up to 2.5 weeks on a single charge; compact and lightweight (0.4 kg / 0.86 lb).

HL450 Laserometer (Laser Receiver)

The Spectra Precision HL450 Laserometer delivers digital grade feedback for faster and more accurate measurements in elevation and slope applications.

• Working range up to 800 m (2,600 ft) with GL700 Series lasers.
• Digital readout with front and rear LCD displays and 9-channel grade indication.
• Fine (±1 mm) and coarse (±5 mm) accuracy settings for different tasks.
• 102 mm (4 in) reception window with anti-strobe filter to reject interference.
• IP67-rated for dust and water protection; operates up to 70 hours on two AA batteries.

Applications

• Road construction and fine grading operations.
• Airport runway and site preparation work.
• Trenching, pipe laying, and concrete forming.
• Landfill, embankment, and general earthworks applications.