Walking Stick

Rail Infrastructure Integrity Solution

The integrity of rail infrastructures is at the heart of safe and economical transport systems, and the rails themselves being a vital part.


  • Whole rail head surface inspection in one pass thanks to the shaped probe
  • Audible warning of defects
  • Deepest defect (per yard) automatically sized and reported
  • Battery life exceeds five hours of continuous use
  • Technology that withstand rigorous test for approval for use on UK railways (certificate of conformity)


Early crack detection in the head of rails is not only vital to safety, but also leads to a well-managed maintenance program. A tool that can assess the severity of cracking and give information on whether to re-rail a section of track or the problem can be controlled by locally grinding the rail head, is invaluable; for considerable cost savings and avoiding unnecessary re-railing projects.

Working with rail partners, a product was developed to meet these requirements. Integrating alternative current field measurement (ACFM®) technology, Walking Stick™ helps assess the integrity of rail tracks by detecting and sizing surface-breaking defects in rail heads. Walking Stick indicates defect severity by reporting crack pocket depth (the depth of the defect along its propagation angle) and is capable of discriminating between different types of rail-head defects such as head checking, gauge corner cracking, squats, and lipping.



  • 700 × 300 × 1000 mm (27.5 × 11.8 × 39.4 in)
  • 21 kg (46.3 lb)
Operating temperature range
  • -20–40°C (-4–104°F)
Environmental protection
  • IP54
Power supply
  • Integral 12 V battery supply, rechargeable by domestic 110 V or 240 V AC 40/50 Hz supply
Typical operating speed
  • 2–3 km/h (1.5–2 mph)