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    Inclinometer System Slope Indicator

Inclinometer System Slope Indicator

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Digitilt AT System
Slope Indicator’s Digitilt AT system provides a modern alternative to the classic Digitilt inclinometer system. The system includes a digital probe, lightweight control cable, Bluetooth reel, cable gate, Digitilt Reader app, and DigiPro2 software for the PC.


Inclinometers are used to monitor subsurface deformations of the ground in landslides, embankments, and dams and around deep excavations and tunnels.

Inclinometer casing is installed in a vertical borehole that passes through suspected zones of movement into stable ground.

The Digitilt AT system is used to survey the casing. The first survey establishes the initial profile of the casing. Changes in the profile, revealed by comparing subsequent surveys to the initial, indicate that ground movement has occurred.
Plots of inclinometer data show the magnitude, direction, and rate of ground movement.


Survey Operations
The Digitilt AT system leverages advances in sensor technology and mobile computing to bring simplicity to survey operations.

To start a survey, tap an inclinometer from the list displayed by the Reader, or scan a QR code.

At each survey depth, the Reader prompts when the reading is stable and ready to record. To record the reading, just pull the cable upwards to the next depth. The reading is stored in non-volatile memory.

If the survey is interrupted for any reason, simply tap to resume at the same depth, with no loss of data. Validate the completed survey by plotting checksums, profiles, or changes on the high-resolution display.

Afterwards, send surveys to the office via the internet, using email with automatic file attachments or Dropbox for full synchronization. If the internet is not available, use a USB cable for data transfers.


  • Classic Performance: Survey times match or better start-to-finish times of the classic Digitilt system.
  • Lightweight Cable: Easy to carry and easy to handle, the lightweight AT control cable is also easy to read, with large labels at every other graduation.
  • Excellent Tracking: Its short length and top quality wheels allow the AT probe to track casing grooves through tight curves.
  • Compact Cable Gate: The unique cable gate aligns cable graduations precisely at the top of the casing, eliminating the potential for depth errors if the cable gate is forgotten.
  • Digitilt Reader App: The Reader app is central to the simplicity and power of the AT system. Running on a certified Android tablet, the Reader app supports high resolution displays, touch interfaces, and full internet
  • DigiPro2: DigiPro2 software creates inclinometer databases, manages inclinometer data, generates plots and reports, and provides advanced routines for identifying and correcting errors.

Hands-Free: Simply
pull the cable to
record a reading.


At Probe
Tilt SensorsMEMS x 2MEMS x 2
Wheel Base500 mm24"
Resolution0.005 mm0.0002"
Temp Rating-20 to +70°C-4 to +158°F


Control Cable
Metric cables have 0.5m graduations with numeric depth labels every meter. English cables have 2 foot graduations with depth labels every 4 feet. Graduations are measured from top wheels of probe. The four-conductor cable has a Kevlar strain member, and polyurethane jacket.


Bluetooth Reel
Bluetooth reel provides 40 hours of operation on one charge. Charge time is 5 hours. Controls include on/off switch and LEDs for power, charge state, and Bluetooth connection.


Cable Gate
  • Cable gate aligns graduations with top of casing.
  • Fits 48, 70, and 85mm (1.9, 2.75, 3.34"casing.
  • Outside diameter is 102mm (4").


Digitilt Reader App
Digitilt Reader App (Download)Using the Android device, visit and search for "Digitilt Reader."
RequirementsCertified Android device, as listed on the Slope Indicator website.
CapacityNumber of inclinometers and surveys is limited only by device memory. Maximum
depth 300m or 1000 ft. Depth intervals are multiples of 0.5m or 2 ft.
ScanScans a QR code to start survey. Use DigiPro2 to generate the QR code then fix the
code to a convenient surface, such as the casing, cap, or a page in a logbook.
SurveyDisplays list of inclinometers. Tap to start a survey. Tap and hold to edit inclinometer parameters.
Survey ScreenLarge, readable characters. Shows active depth, depth last recorded, A and B readings in mm, inches, or sine units, checksums, and progress bar. Record button prompts user to wait, tap, or pull. Other features include easy depth changes and automatic bookmarks.
Plots & DataPlots checksums, profiles, change-from-initial, and change-from-last in high resolution. Displays data table for inspection and survey-time corrections.
SendSends inclinometer data to PC as email attachments or syncs via Dropbox. If internet is not available, data files are transferred via USB cable and Windows file manager.