A wafer piece of pipeline engineered for insertion between two flanges for a precise fit, Scaling Watch allows the detection of scale. Designed for the precise measurement of scale in pipelines and other fluid control environments, this device uses electrical capacitance tomography (ECT). This technology allows operators to see inside piping systems without stopping the process or opening up the pipeline. ECT also enables 3-D imaging and measurement of nonconductive media inside process pipelines.