Translations:Vacumatic filler/3/en

This mechanism has the advantage of having a shorter bottom, which makes the appearance of the pen more pleasant, this was even more evident in the first versions of the system, called "lockdown", in which the button, made with a metal cylinder with a lateral groove, could be kept in pressed position thanks to the presence of a "L" shaped end of the groove itself, which allowed it to be attached to the mechanism by a rotation, so then to allow the closure of the back itself (screw).