Digital Inclinometer




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

The Model GK-604D Digital Inclinometer System is delivered in its entirety and includes a Model 6100D Digital Inclinometer Probe, a reel-mounted cable and a Field PC. The Model 6100D contains electronics to convert the analogue voltage into a digital signal, which is transmitted by the control cable to the cable reel containing the Interface, which communicates wirelessly with the Model FPC-2 Field PC.

A Digital Compass is built into the Inclinometer Probe to correct the inclinometer data sets for any twist (or spiralling) in the inclinometer casings. The spiral survey data is presented on (and stored in) the same FPC-2 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.



  • Standard Range: ±30°
  • Resolution (Probe): 0.0013°
  • Resolution (System)¹: ±0.025 mm/500 mm (±0.0001 ft/2 ft)
  • Total System Accuracy²: ±3 mm/30 m (±0.125 in/100 ft)
  • Temperature Range: −30°C to +85°C
  • Length × Diameter³: 700 × 25 mm, 1200 × 25 mm or 32 × 1 in
  • Wheel Base: 0.5 m, 1 m or 2 ft
  • Casing Size I.D.: 48 to 89 mm (2 to 3.5 in)

¹±10 arc seconds. The resolution shown is only true in the range of ±5° from vertical. Beyond this, the resolution is diminished (by the cosine of the angle from vertical). Resolution also depends on readout instrument used.
²Within 3° of vertical. This takes into account the accumulation of the error inherent with each reading, and normal placement errors in positioning the probe inside the casing; also the effect of debris in the casing, or casing damage.
³The cable connector adds 150 mm to the length of the probe.


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