Electronic apparatus, namely, ultrasonic detectors for locating surface and subsurface defects in many materials including metals, plastics and wood; electronic apparatus in the nature of ultrasonic detectors for measuring the thickness of materials; ultrasonic transducers; ultrasonic transducers angle beam, namely, Laser-beam-emitting gauge device which projects right angles for construction purposes; eddy current testing equipment for detecting surface and near-surface flaws in conductive metal materials; Parts handling system comprised primarily of in-line and standalone eddy current sensors including surface, encircling, and bobbin sensors, for sorting thin sheets of metal and nonconductive solid coatings such as paint, based on electrical conductivity, magnetic permeability, and thickness; x-ray detector in comprised of radiographic sensors for determining industrial flaws by inspecting material for surface and subsurface defects, measuring internal features, and confirming the location of hidden parts in an assembly; Leak detectors for detecting leaks in fluid systems comprised of liquid penetrate equipment for locating cracks, porosity, and other defects that break the surface of a material and have enough volume to trap and hold the penetrate material in nature of liquid penetrate spectronics