The Magnetic Positioning Logging Tool (CCL10) is an instrument used for positioning measurements during casing operations. The probe it uses consists of a coil and four magnets, with the magnets divided into two groups and installed at the upper and lower ends of the coil, creating a constant magnetic field around the coil. When the tool passes a collar, the magnetic field lines are rearranged, and the coil is subjected to a changing magnetic field, which induces an alternating current signal. This signal is amplified and converted into a frequency, which is counted by the instrument’s microcontroller. During telemetry of the short joint addressing, the frequency is sent to the telemetry short joint, encoded, and transmitted via cable to the surface, completing the measurement of the casing collar.