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<noinclude>{{ReferBox|Filling systems}}</noinclude>The ''eyedropper filler'', also called ''drop filler'', is the first filling system used in fountain pens and in reality it cannot be considered even a real filling system, since in essence there is no ''"system"''.

<noinclude>{{ReferBox|Filling systems}}</noinclude>The ''eyedropper filler'', also called ''drop filler'', is the first filling system used in fountain pens and in reality it cannot be considered even a real [[Filling systems|filling system]], since in essence there is no ''"system"''.