Abstract: In one embodiment, a method of inspecting a lead body comprising a plurality of wire conductors helically wound in groups separated by respective gaps, the system comprises: providing a lead body comprising a plurality of wire conductors, helically wound in groups separated by respective gaps, in transparent insulative material, in a channel of a fixture; providing a sensor module; scanning the sensor module along a substantial length of the lead body to obtain image, interferometric, or other data of the lead body; electronically processing the data to calculate respective distances from given turns within a group of the wire conductors from an other sheath of the lead body; determining whether the calculated respective distances correspond to expected values within defined tolerances; and generating an inspection report for the lead body based on the determining.