This pen was kindly sent to me by Webson Gill – thank you!

Measurements
Length (capped): 144.1 mm/5. 76”
Length (uncapped): 135.8 mm/5.35”
Length (posted): N/A
Diameter (section): 8.5 – 10.3 mm/0.34 – 0.40”
Diameter (barrel): 7.5 – 13.2 mm/0.30 – 0.52”
Weight (all): 30.0 g
Weight (body): 20.5 g
Weight (cap): 9.5 g