The Three Barrier Magnetic Thickness tool i(MBTT3) is designed for conducting comprehensive corrosion inspection of well tubular to assess the remaining metal thickness of well completion like tubing and/or casing, across up to three barriers. This is achieved through the emission and reception of an electromagnetic field, with subsequent data computation using proprietary in-house software. The Memory and SRO Magnetic Thickness tool eliminates the need for any prior preparation of the well completion, such as a scraper run. Operating as a stand-alone survey, its primary aim is to streamline the process, saving both time and expenses associated with evaluating the integrity of mature wells.