An apparatus for orienting a test article relative to a loading axis includes a first member and a second member. The power detector detects for total received power of a received OFDM signal, e. Based upon the selected entry, a corresponding multimedia sample such as a thumbnail image of a screen captured image or an audio sample of the audio file can be retrieved and presented as a tool-tip. A latch member is housed in a housing chamber on the bottom of the extendable rod and has coupling sections formed on the bottom in an annular manner.