Hahaha - here’s a pic of my current pencil box that I take to work - fat black sketching pencil bought in Italy in the early 80s, Rotring propelling pencil from a few years back and a nice pen I was given when I left HK one time. I still have a full set of Rotring drawing pens (the sort you fill with ink!) plus a set of tungsten tips for drawing on film (what a nightmare that was!) And to answer the question - adjustable!
Here is an interesting project for some one 1988 Italdesign Aztec Project & Parts https://bringatrailer.com/listing/1988-italdesign-aztec-project/ Image Unavailable, Please Login
Italdesign was founded by Giugiaro, one of the greatest designers of all time. Like Zagato, it's an old company that employs hundreds of designers, not all of whom match the brilliance of the company founders.