Loading... Please wait...


Digital Inclinometer | Spiral Indicator System (MEMS) | Model GK-604D

  • Model GK-604D Digital Inclinometer System.
  • Model 6100D Digital Inclinometer Probe.
  • Model 6000-5-2 reel (150 m storage capacity) and Model 6000-18 Carry Case.
  • Model FPC-3 Field PC showing a Live Inclinometer Data reading screen shot.
  • Model 6000-17 Cordura® carry case, with padded interior, is used to protect the probe, FPC-3 Handheld Field PC and accessories from shock during transportation.
  • Model 6000-10 Dummy Probe, shown with accessories, used to check for obstructions or distortions that may be present in installed inclinometer casings.
  • Model 6000-2 Control Cable: A lightweight, Polyurethane-jacketed cable with a central Kevlar® strand.
  • Model 6000-22 Cable Pulley and Casing Adaptor, provided for use with inclinometer casings with a maximum O.D. of 70 or 85 mm.
  • The Model GK-604D-EW Electric Cable Reel System comprises a 12 volt electric winch, a cable reel with 300 m capacity, an automatic brake and a galvanized steel tripod.
Model GK-604D

The Model GK-604D Digital Inclinometer System is delivered in its entirety and includes a Model 6105 Digital Inclinometer Probe, a reel-mounted cable and a Field PC. The Model 6105 contains electronics to convert the analog voltage into a digital signal, which is transmitted by the control cable to the cable reel containing the Interface, which communicates via Bluetooth® wireless technology to the Model FPC-3 Field PC. A Digital Compass is built into the Inclinometer Probe to correct the inclinometer data sets for any twist (or spiraling) in the inclinometer casings. The spiral survey data is presented on (and stored in) the same FPC-3 Field PC used for taking inclinometer readings. An optional 12 volt electric cable reel system is available, which can provide substantial time savings when surveying deep inclinometer casings.


±0.00025° (±0.004 mm/m)
Compass Sensor Resolution
Compass Sensor Repeatability
Operating Temperature
−40 °C to +65 °C (−40 °F to +149 °F)
0.5 m or 2 ft
Length × Diameter³
700 × 25 mm or 32 × 1 in
Maximum Cable Length
500 m (1640 ft)
Casing Size I.D.⁴
48 to 89 mm (2 to 3.5 in)

¹Calibrated Range: ±30°

²99% confidence interval (i.e. 99 out of 100 individual readings fall within this tolerance).

³The cable connector adds 150 mm to the length of the probe.

⁴The probe is designed for use in all standard inclinometer casing up to a maximum diameter of 89 mm (3.5 inches).

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.

The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by GEOKON is under license. Android is a trademark of Google LLC. Other trademarks and trade names are those of their respective owners.