Fuente: Wipo "Sensorization" An inspection apparatus and methods for inspecting horizontal tubes in an industrial environment are disclosed. The apparatus can include a drive module including a pair of wheels to engage a top tube of a vertically arranged layer of tubes, a telescoping pole, a sensor carriage assembly coupled to the telescoping pole, and a lowering mechanism operationally coupled to the telescoping pole to selectively extend or retract the telescoping pole providing a selected vertical position of the sensor carriage assembly.