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<noinclude>{{ReferBox|Filling systems}}</noinclude>In reality two completely different filling systems are called ''hatchet filler'', as they were given this name by their respective manufacturers. The first is the one used by [[Holland]] from 1908 to 1912. The filling always involved the use of a pressure bar placed at a slit, except that in this case the slit was left open on one side, while on the other side a 'P' shaped lever was placed.  

In reality two completely different filling systems are called ''hatchet filler'', as they were given this name by their respective manufacturers. The first is the one used by [[Holland]] from 1908 to 1912. The filling always involved the use of a pressure bar placed at a slit, except that in this case the slit was left open on one side, while on the other side a 'P' shaped lever was placed.

[[Image:HatchetFillerHolland.svg|center|500px|Diagram of a pen with ''hatchet filler'']]

[[Image:HatchetFillerHolland.svg|center|500px|Diagram of a pen with ''hatchet filler'']]