Sliding probes are typically used on aircraft wings (and on other similar structures) to detect cracks and corrosion on or near the surface around fasteners and in deeper layers under the skins.
These eddy current probes either slide along or over rows of fasteners.

PFS001: Dual Element Sliding Probe - Reflection - Lemo 4-Way - contains a transmit and receive element - 400Hz-50kHz - used on fastener head sizes 1mm and below.

PFS002: Dual Element Sliding Probe - Tx, Rx - contains a transmit and receive element - 100Hz-500kHz - Comes with 1.5, 2.5 and 3.5mm wide lens.

Parameter Name	Parameter Value
Applications	surface defect
Options	non-destructive