Geo Fennel FL510 HV-G

Geo Fennel FL510 HV-G

SKU: 231700 Category:


  • Geo Fennel FL510 HV-G
  • Receiver FR 77-MM Tracking with clamps for levelling staff and scaffold
  • 2-way RF remote control
  • Li-Ion batteries and charger
  • Vertical mount
  • Telescopic viewfinder
  • 360° horizontal fine adjustment bracket
  • Hard Carry Case
  • Instructions
  • Calibration Certificate 
  • 2 Year Warranty


Geo Fennel FL510 HV-G

Improved performance utilising Power Switch-Technology: The power of a class 3R in a class 2 laser. 4 mm laser beam diameter for optimized compatibility at use with FMR 700/800 at long distance. Including receiver FR 77-MM TRACKING with mm-indication.

Tracking functions:

The laser plane is automatically centred to the receiver “on-grade” Vertical: in both X and Y axis Horizontal: one axis X or Y, other axis horizontal self-levelled For highest demands: exact monitoring of the tracked axis by continuous radio link between rotating laser and receiver. This application requires the use of a 2nd receiver for height checking work.

Zonal control with electronic beam screen avoids spurious measurements caused by crossing laser planes and reflections – increases site safety Indication of grade value in % after completion of tracking process shown on the instrument and remote control display

Slope functions:


  • Digital grade setting of X and Y axis up to ±10 %
  • Manual slope setting of X and Y axise


  • Direction of X axis can be set up to ±10 % with Y axis self-levelled
  • Direction of X and Z axis can be set manually Last tracked or keyed in grade value is retained after switching off and is retrievable from the memory (both X and Y axis)
  • Automatic TILT function
  • VWS function (Vibration-Wind-Security)
  • Rotation will not be stopped due to light ground and wind vibrations (combined with TILT function)
  • Zonal control with electronic beam screen (masking)
  • Fully functional 8-channel 2-way RF remote control
  • Li-Ion battery technology

Additional information

Weight 6 kg
Dimensions 53 × 26 × 42 cm


  • Dual Axis Laser
  • Horizontal and vertical
  • Digital grade adjustment
  • Monitored grade (also in tracking mode)
  • TILT function
  • VWS function
  • Tracking function horizontal and vertical
  • Zonal control
  • 90° beam to zenith
  • Illuminated display
  • 2-way RF remote control
  • Manual function
  • Operation with rechargeable Li-Ion or alkaline batteries
  • Dust / water protection IP 66


Self-levelling range:  ± 8°

Accuracy horizontal:  ± 0.5 mm / 10 m

Accuracy vertical:  ± 1 mm / 10 m

Working range with receiver FR 77-MM Tracking Ø:  400 m*

Laser diode / Laser class:  2

Horizontal slope setting              

X-axis:  ± 10.000 %

Y-axis:  ± 10.000 %

X and Y axis:  Σ ± 14 %

Vertical slope setting   

X axis:  ± 10.000 %

Y(Z) axis:  horizontal self-levelled

Working range tracking function:  90 m*

Rotating speed:  300 / 600 / 1100 rpm

Operating time: 40 h

Power supply: intelligent / Li-Ion or Alkaline batteries (optional)

Remote control range:  100 m

Remote control channels:  8

Temperature range:  -10 °C – +50 °C

Dust / water protection:  IP 66

Weight (instrument only):  3.85 kg


Geo Fennel FL510 HV-G Brochure