A down hole well tool for installing a casing or liner in a well bore includes a tool unit and an expansion module for expansion of the casing or liner. More specifically, an array of materials on a fluid permeable support contained within a reaction cell having a semipermeable membrane can be rapidly screened for characteristics such as catalytic activity, selectivity, and adsorption and desorption properties. An object phase associated with the regions is established using the obtained image and a height profile of the regions is determined using the object phase and a reference phase. The plates are superposed and held by applying the second flange of each plate to the second flange of the adjacent plate. The installer program also accesses information related to the installed state of the application and related applications. The length of two adjacent strip conductor sections of the strain gauge sensor varies in such a way as to measure the angular position of the roller bodies between the strip conductors.