The series is about interesting places in Durham, more will be soon added.

Handmade model with flush brass ring and brass inserts, length varies based on what I can get out of the material, is just 138 mm long and made from 8 parts. The diameter is ~15.3mm. Made without CA glues, joined with threading, and finished only with Renaissance Wax.

The ring is about 10mm.
This is a turn cap model.

I call them desk pens because of the absence of a clip, and the cap does not go on the post.