The name ''aerometric'' is actually used in this sense mostly by collectors, the company was rather referring to it by the name ''[[Aero-metric Ink System]]'' (reported for example in advertisements like [[:File:1950-Parker-51-Signet.jpg|this]]) for the set of the filling system (called ''[[Foto-fill filler]]''), the feeder and the new PVC tank (called ''[[Pli-glass]]''), which allowed the company to proclaim the pen as not containing any rubber parts.<noinclude> | The name ''aerometric'' is actually used in this sense mostly by collectors, the company was rather referring to it by the name ''[[Aero-metric Ink System]]'' (reported for example in advertisements like [[:File:1950-Parker-51-Signet.jpg|this]]) for the set of the filling system (called ''[[Foto-fill filler]]''), the feeder and the new PVC tank (called ''[[Pli-glass]]''), which allowed the company to proclaim the pen as not containing any rubber parts.<noinclude> |