Ultimate Control of X/Y Axes
■ Fully automatic up to +/-25% grade on X/Y axes
■ Automatic Axis Features
(X Axis – only GL622N)
-High Precision Axis Alignment
(only GL622N)
-Simplified Grade Match: measures and
displays the existing grade over unknown ground
-Complete PlaneLok: automatically locks on
the laser beam to an existing elevation
■ Alignment range for both axes is +/-40°
■ Fully automatic vertical leveling
■ Fingerprint function – detects only the laser
beam of the paired transmitter
Built for Today’s Jobs
■ Withstands a 1 m (3 ft) drop onto concrete
■ Long operating range – 800 m (2.600 ft) diameter
■ Long operating radio range – 150 m (490 ft)
■ Intuitive keypad and graphic display
■ Password secured
■ Mask mode
■ Various power options
■ Automatic temperature compensation
■ Electronic leveling vibration filter

GL612N/GL622N Specifications
■ Leveling accuracy1,3: ± 0.5 mm/10 m,
1/16“ @ 100 ft, 10 arc seconds
■ Grade accuracy1,3: ± 1.0 mm/10 m,
1/8“ @ 100 ft, 20 arc seconds
■ Operating diameter1,2: appr. 800 m (2600 feet)
with detector
■ Grade range (Y, X-GL622N): ± 25% both axes
(not simultaneously)
■ Rotation: 300, 600, 750 rpm
■ Laser type: 639 nm
■ Laser class : Class 2
■ Self-leveling range: appr. ± 14°
■ Leveling indicators: LCD indications and LED flashes
■ Radio range (HL760)1,2,4: up to 150 m (490 ft)
■ Power source: NiMH battery pack
■ Battery life1
: 35 hours NiMH
■ Operating temp.: -20°C to 50°C (-4°F to 122°F)
■ Storage temp.: -20°C to 70°C (-4°F to 158°F)
■ Tripod attachments:
5/8 x 11 horizontally and vertically
■ Dust and waterproof: Yes – IP67
■ Weight: 3.1 kg (6.8 lbs)
■ Low voltage indication: LCD battery indicator
■ Low voltage disconnection: unit shuts off
■ Warranty: 5 Years
HL760 Digital Readout Receiver
■ Highly versatile receiver for basic and advanced
leveling and aligning applications
■ Works with GL612N/GL622N in automatic Axis
Alignment (only GL622N), Grade Match and
PlaneLok applications
■ Key Features:
– Digital readout of elevation
– Exact distance from grade displayed
– Anti-strobe sensor to prevent false reading
from jobsite strobe lights
– Large reception height to ease beam reception
– Withstands a drop of up to 3m (10ft)
– Radio communication – works with another
HL760 for long range wireless remote display
and monitoring capability
– “Fingerprint” function of the HL760 DRO
receiver only accepts the beam from the laser
it is paired with
■ User Benefits:
– No need to go “on-grade” to measure;
– Saves considerable time
– Reduces rework by allowing remote monitoring
– Increases reliability, accuracy and durability
RC602N Remote Control Specifications
■ Operating range1,2,4: up to 150 m (490 ft)
■ Power source: 2 x 1.5V AA alkaline batteries
■ Battery life1
: 130 hours
■ Dust and waterproof: Yes – IP66
■ Weight: 0.26 kg (0.57 lbs)
HL760 Laserometer Specifications
■ Digital readout units: mm, cm, ft, in, frac. in
■ Reception height: 127 mm (5 inches)
■ Six On-grade sensitivities:
– Ultra Fine 0.5 mm (~1/32 in)
– Super Fine 1 mm (~1/16 in)
– Fine 2 mm (~1/8 in)
– Medium 5 mm (~1/4 in)
– Coarse 10 mm (~1/2 in)
– Calibration Mode 0.1 mm (~1/64 in)
■ Battery life (2 x AA):
60+ hours continuous operation
■ Auto shut-off: 30 minutes/24 hours
■ Operating temp.: -20°C to 50°C (-4°F to 122°F)
■ Dust and waterproof: Yes – IP67
■ Weight: 0.27 kg (9.5 oz)
■ Warranty: 3 Years “No Excuses”
(1) at 21° Celsius (70° F)
(2) under optimal atmospheric circumstances
(3) along the axis
(4) Heigt of instruments 1m (e.g. with tripod)

• GL612N / GL622N DATA SHEET