“…The eddy current method has been used in several industries, including space [1,2] and chemical processing [3,4]. Some specific applications include detection of cracks [5,6,7,8,9], measurements of material thickness [10], determining metal thinning due to corrosion [11], measurements of coating thickness [12], conversion coating [13], determining electrical conductivity [14], heat damage detection [3], and detection of corrosion in heat exchanger tubes [4]. This paper presents progress in the development of an eddy current prototype that combines positional and eddy-current data to produce a visual representation of materials being tested [15].…”