A kind thank you to the inimitable Joost Appelboom of the Appelboom Empire for lending me this pen.

Measurements
Length (capped): 123.7 mm/4.87”
Length (uncapped): 141.3 mm/5.56”
Length (posted): N/A
Diameter (section): 12.9 – 13.7 mm/0.51 – 0.54”
Diameter (barrel): 13.7 mm/0.54” (uniform)
Weight (all): 45.0 g