PR9 001


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The PR-9 sonic tester is a dedicated design for the racing industry, and commonly used to measure the thickness of cylinder walls, head ports, decks, chassis tubing, body panels, and windshields. An additional benefit is the dual element style of probe with the ability to locate blind surface corrosion or deterioration on the blind surface in the water jacket area prior to boring a cylinder or port. The high speed scan feature takes 100 measurements per second to save time when scanning a complete cylinder. Simply drag the probe from the bottom of the cylinder, at a given clock position in the cylinder, up to the deck area to locate the minimum thickness found. Scan can then be switched off and the user can find the exact location of the minimum thickness.

The PR-9 has three material calibration options (single point, two point, and target velocity) for increased accuracy. Cylinder wall mapping software available for manually creating reports. Finally, our 5 year limited warranty indicates how we feel about the quality

This product does not have additional information.


CylindersBody Panels
Chassis TubingRoll Cages
Head PortsWindshields

  • Weight: 11 ounces (w/batteries)
  • Size:  Width (2.5 in / 63.5 mm)
    Height (5.17 in / 131.3 mm)
    Depth (1.24 in / 31.5 mm)
  • Operating Temperature: -22 to 167F (-30 to 75C).
  • Case: Extruded aluminum body
    with nickel-plated aluminum
    end caps (gasket sealed).


  • Sealed membrane that is
    resistant to both water and
    petroleum products.
  • Nine tactile-feedback keys.


  • Dual element (transmit and receive).
  • 1 to 10 MHz frequency range.
  • Locking quick disconnect Lemo connectors.
  • 4 foot cable.
  • Custom transducers available for special applications.
Power Source 

  • Two 1.5V alkaline, 1.2V NiCad, or 1.5V
    Lithium AA cells.
  • Typically operates for 45 hours on
    alkaline and 23 hours on NiCad.
  • Low battery indicator on display. Auto
    shut-off after 5 minutes of inactivity.


  • Multi-function 7 segment 4.5 digit
    liquid crystal display with 0.500 in
    digit height. Two 0.125 in14 segment
    fields for labels and values, and one 7
    segment field for labels and values.
    Additional icons to indicate features
    and modes.
  • Backlight is selectable on/off/auto,
    and selectable brightness (Lo, Med, Hi)
  • Bar graph indicates repeatability of


  • Factory calibration traceable to NIST &


  • 5 year limited.

  • Range:
    Measures from 0.025 to 36.00 inches
    (0.63 to 914.4 millimeters). Range
    dependent on material and transducer
  • Automotive Applications:
    0.050 to 1.500 inches in casted
  • Units:
    English & Metric
  • Resolution:
    0.001 inches (0.01 millimeters)Velocity Range:
    0.0120 to .7300 in/μs
    (305 to 18,542 m/sec)
  • PRF: 200Hz
  • Display Update Rate: 10Hz
  • High Speed Scan:
    Display the lowest measurement found
    during a scan. Scan speed at 100Hz.
  • One or Two point calibration option.
This product has no accessories.
This product does not have software options.
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