A small collection of ... what do you call these ?

[fernando]

Originally Posted by Battara

... Very nice!...

Thank you José. See the fancy top of two of them.

Originally Posted by A. G. Maisey

... I believe the pencils that use a push button at the end are called 'clutch pencils', the ones that extend the lead by turning a part of the barrel are called 'propelling pencils' --- at least in Australia that is so...

Thank you Alan; by the same order of ideas, the ones that extend the lead (or pen) by sliding side rings are also propelling pencils, as propelling is the act of causing a move, and not how the move is effectuated ?. I still don't know how these these things called in portuguese.