A pipeline inspection tool comprising: a cylindrical body including a longitudinal centerline and an external circumferential surface, the cylindrical body having a deformable portion located between a forward end and a rearward end of the cylindrical body, the deformable portion containing a plurality of signal sources and, for each signal source of the plurality, a corresponding sensor, the corresponding sensor being located nearer the external circumferential surface of the cylindrical body than its corresponding signal source of the plurality of signal sources, the corresponding signal source being located nearer the longitudinal centerline of the cylindrical body than the corresponding sensor and aligned with the corresponding sensor; the deformable portion moveable between a first size and a second size, the first size being when the deformable portion is in an uncompressed state, the second size being when the deformable portion is in a compressed state and smaller than the first size; each sensor being configured to detect the signal of the corresponding signal source; the detected signal of each source having a first strength when the deformable portion is in the first size and a second strength different than the first strength when the deformable portion is in the second size; the corresponding sensor configured to detect the first strength and the second strength; a housing contained by the cylindrical body, the housing surrounding means for storing the detected first and different strengths and a power source; and a support arm, the corresponding sensor being located on the support arm, the support arm being moveable between a first and a second radius about the longitudinal centerline as the deformable portion moves between the first and second sizes, the second radius being smaller than the first radius. a cylindrical body including a longitudinal centerline and an external circumferential surface, the cylindrical body having a deformable portion located between a forward end and a rearward end of the cylindrical body, the deformable portion containing a plurality of signal sources and, for each signal source of the plurality, a corresponding sensor, the corresponding sensor being located nearer the external circumferential surface of the cylindrical body than its corresponding signal source of the plurality of signal sources, the corresponding signal source being located nearer the longitudinal centerline of the cylindrical body than the corresponding sensor and aligned with the corresponding sensor; the deformable portion moveable between a first size and a second size, the first size being when the deformable portion is in an uncompressed state, the second size being when the deformable portion is in a compressed state and smaller than the first size; each sensor being configured to detect the signal of the corresponding signal source; the detected signal of each source having a first strength when the deformable portion is in the first size and a second strength different than the first strength when the deformable portion is in the second size; the corresponding sensor configured to detect the first strength and the second strength; a housing contained by the cylindrical body, the housing surrounding means for storing the detected first and different strengths and a power source; and a support arm, the corresponding sensor being located on the support arm, the support arm being moveable between a first and a second radius about the longitudinal centerline as the deformable portion moves between the first and second sizes, the second radius being smaller than the first radius.