These pens were kindly sent to me by Ben of Gravitas Pens – thank you!

Measurements
Length (capped): 143.7 mm/5.66”
Length (uncapped): 133.5 mm/5.45”
Length (posted): 144.4 mm/5.68”
Diameter (section): 10.5 – 13.0 mm/0.42 – 0.51”
Diameter (barrel): 8.1 – 12.0 mm/0.32 – 0.47”
Weight (all): 33.0 g
Weight (cap): 7.5 g
Weight (body): 25.5 g