top of page
The Piletest BIT borehole inclination tester


BIT measures the verticality of open boreholes and all kinds of deep foundations: drilled shafts, precast piles, H piles, and even sheet piles.

BIT uses the auger/bucket as the centralizer in the borehole. Eliminating the need for a heavy-to-move system. A special centralizer is used to lower the sensor into a standard access tube of an existing pile. 

  • No expensive inclinometer tubes

  • Lightweight 1-person simple operation  

  • Works on any diameter

  • ASTM D8232-18 Standard compliant



Measurement of inclination is required to ensure the deep foundation (vertical or raked) stays within the allowable deviation, typically 2%. More stringent requirements are often specified for diaphragm and secant walls to ensure that there are no gaps in the wall and that the bottom of the wall is in the correct location. Inclination measurement is also utilized in deep wells for various applications.

Easy to Operate Inclination test for Borehole and Pile Foundations, Diaphragm and Secant Walls 

Piletest symbol of quality


  • 100% QA tests at 16-atmosphere pressure, vibration, and extreme temperature.

  • The BIT sensor can tolerate the harsh conditions of the borehole and drill machine

  • 3-year warranty!

  • Rugged connectors, cables & sensors

Piletest symbol of great features

Easy to Use

Piletest symbol of performance

Top Perfromance

  • 0.1% accuracy

  • Check the inclination of a 50m borehole in  less than 20 minutes

  • Works on any diameter

  • Use simple PVC tubes instead of expensive grooved test tubes 

  • Test in metal casing, with magnetic agnostic sensor

  • Weighs under 13Kg

BIT - Technical Specifications







Temperature range



Sensor: Rugged metal case

Instrument: Inside Schill cable reel

430mmL x 325mmW x 105mmH (instrument only)

6.0 kg (instrument with 80m cable)

7.0 kg (CSL centrelizer)

13.0kg (Typical shipping)

Operating : -20°C to 50°C

Storage : -40°C to 70°C

90% (non-condensing)

Sensor: IP67, Protection against complete submersion in water

Instrument: IP62, 90% condensation (light rain)


External - USB

Operate on the USB connection to the tablet or computer device.


AFNOR NF P94-160-3 ASTM D8381-21

Meets or exceeds




Sample rate



100Hz ~ 4kHz in stainless enclosure.
25 mm diameter
Heavy-duty polyurethane on reel.
50kHz (20μS resolution)
16bit A/D + 14 gain levels = 30bit dynamic range . 3mm resolution <0.1% error.


Pile lengths Productivity


1m to 50m
10-15 min (depending on pile length) per pile





Arrival time vs. depth
Pile tip depth
Wave speed in pile
Multi-lingual report generation in MS Word format


Computer (Minimum)

Windows Win7/Win10/Win11.  

Screen resolution 1280x1024 or higher

Other Customers Also Purchased

The Piletest PSI parallel seismic instrument for pile foundation


Parallel Seismic Instrument

PSI uses the well-known Parallel Seismic method to establish the depth of existing foundations (specifically for a pile or deep foundations) where the superstructure  (i.e. existing building) precludes access to the pile heads.

The Piletest CHUM crosshole ultrasonic monitor CSL


Cross Hole Ultrasonic Monitor

The CHUM uses the Crosshole Sonic Logging CSL testing method to perform high-resolution quality control of deep foundations. It is used mainly for large-size deep pile foundations, where pile integrity tester like PET is not suitable.

The Piletest PET a pile integrity test equipment PIT tester

PET Bluetooth

Pile Integrity Tester
PET is used to test the integrity of deep pile foundations. PET Uses the pulse-echo method (PEM) for pile integrity testing (PIT). A pile test starts when the pile top is struck with a hammer, and the PET accelerometer records the reflected waves, which are displayed as a reflectogram.

  • 12345678 Example Accessory #4
    This is example accessory #4 description.
  • 12345678 Example Accessory #2
    This is example accessory #2 description.
bottom of page