Spectra Precision GL412 Grade Laser - Manual

Rugged New Grade Laser with
Two-Way Radio Remote Offers
Superior Grade, Level and
Vertical Capabilities
The Spectra Precision ® Laser GL412 (single grade)
and GL422 (dual grade) transmitters are cost-
effective, automatic self-leveling lasers that do
three jobs—level, grade and vertical alignment
with plumb.
Both the GL412 and GL422 feature 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 ability to make grade changes
from anywhere on the job greatly reduces setup
time and speeds operation, especially when
multiple job grade breaks are needed.
Additionally, the GL412 and GL422 Grade Lasers
self-plumb in the vertical position, to allow an
even wider range of applications such as anchor
bolt installation, plus form, tilt up and curtain wall
plumbing. Both units also incorporate automatic
temperature and grade compensation for high
accuracy in any weather or geographical location.
On both models, 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.
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.
Use this versatile laser with a Spectra Precision
Laser HL700 Laserometer at an operating diameter
up to 800 m (2,600 ft), or use it with the CR600
machine-mounted laser receiver for fast and easy
machine control display.
Spectra Precision Laser HL700 Laserometer
The Spectra Precision Laser HL700 Laserometer
uses new technology to measure and display beam
location and is ideal for use with the GL family of
transmitters. The HL700 features a digital readout
of elevation that shows exactly how far you are
from on-grade allowing quick elevation checks
without moving the rod clamp. The large 127 mm
(5 inch) reception height speeds up beam pickup
in grade match and alignment applications. An
anti-strobe sensor stops construction lights from
setting off the receiver, and makes it easier to
identify true laser beam signals. The protective
over molded housing withstands a drop of 3 m
(10 ft) onto concrete. The highly visible LED display
and dual sided LCD’s allow you to work anywhere.
Spectra Precision Laser CR600 Receiver
Another receiver option is the Spectra Precision
Laser CR600 Receiver. In addition to use as a
handheld and rod-mounted receiver, the CR600 can
be used as a machine control mounted receiver
with 270-degree reception and a highly visible
display for use on a backhoe, small excavator or
skid steer. Rugged, accurate and easy to use, the
CR600 provides high, low or on-grade information
for all your grading and excavation applications.
GL412 and GL422
Applications
• Leveling concrete forms
and footers
• General construction
vertical alignment and
plumb such as anchor
bolt and form alignment
• Grading and excavating
• Concrete sections with
run-off for sports fields,
tennis courts, driveways
• “Over the Top” sewer
and storm drain pipe
installations
• Steep slope road
embankments and ditch
banks
• Parking garages, ramps
and drainage
Spectra Precision Laser GL412 and GL422