Disclosed are techniques used in connection with determining a health indicator of a component, such as that of an aircraft component. In a preferred embodiment, a portion of the relevant end of the dispenser package is folded over on itself to prevent inadvertent emission of the product. Other methods, other apparatuses, and systems, kits, assemblies, and uses are also disclosed. A track assembly has a beam attached to lower portions of the frame members at spaced apart connection points along the length of the beam. Among the advantages gained by the use of these devices is no entry drag effect, simpler electronics required to excite the PLIM, and a smaller winding overhang past the steel structure of the PLIM.