Applications Digitilt inclinometers are used to monitor lateral movements  in embankments and landslide areas, deflections of retaining walls and piles,  and deformations of excavation walls, tunnels, and shafts. Operation Inclinometer casing is typically installed in a near vertical borehole that  passes through suspected zones of movement into stable ground. The Digitilt  inclinometer probe, control cable, pulley assembly, and readout are used to  survey the casing. During a survey, the probe is drawn upwards from the bottom of the casing to  the top, halted in its travel at half-meter intervals for tilt measurements  (two-foot intervals are used for English probes). The first survey establishes  the initial profile of the casing. Subsequent surveys reveal changes in the  profile if ground movement occurs. The  inclination of the probe body is measured by two force-balanced  servo-accelerometers. One accelerometer measures tilt in the plane of the  inclinometer wheels, which track the longitudinal grooves of the casing. The  other accelerometer measures tilt in the plane perpendicular to the wheels.  Inclination measurements are converted to lateral deviations. Changes in lateral deviation, determined by comparing data from current and  initial surveys, indicate ground movements. Plotting the cumulative changes at  each measurement interval yields a high resolution displacement profile.  Displacement profiles are useful for determining the magnitude, depth,  direction, and rate of ground movement. Advantages Proven Performance: The servo-accelerometers  used in Digitilt probes were designed and manufactured by Slope Indicator. They  have earned a world-wide reputation for high precision, superior stability, and  rugged construction. Repeatable Tracking: The Digitilt probe is  designed to travel hundreds of kilometers of inclinometer casing. To ensure  consistent tracking in all types of casing, the probe is equipped with robust  wheel carriages, sealed wheel bearings, and specially de-signed wheels. Extended Installation Life: The compact size  of the Digitilt probe allows it to pass through small radius curves, extending  the useful life of the installation beyond that possible with most other  inclinometer probes. Computerized Calibrations: A custom designed,  computerized calibration table performs thorough testing of each inclinometer  probe and generates extremely accurate calibration data. Reliable Control Cable: Digitilt control cable  is durable and easy to handle, stays flexible in cold temperatures, resists  chemicals and abrasion, and provides excellent dimensional stability. Flexible  rubber depth marks are permanently vulcanized to the cable jacket. The marks  cannot loosen and have no rigid edges that can damage the cable jacket and  conductors. Consistent Depth Control: The pulley assembly,  a recommended accessory, helps the operator achieve uniform depth control. The  one-way action of its cable clamp ensures consistent positioning of the probe. Protective Case: The stainless steel carrying  case included with the probe provides good protection during transport. System Compatibility: The Digitilt family  includes a wide range of readouts and computer software, horizontal and in-place  inclinometers, tiltmeters, high quality inclinometer casing, and specialized  accessories.