This pen was kindly sent to me by The Pen Company in the UK – thank you!

Measurements
Length (capped): 138.6 mm/5.45″
Length (uncapped): 122.4 mm/4.81″
Length (posted): 147.9 mm/5.82”
Diameter (section): 8.9 – 10.2 mm/0.35″ – 0.40″
Diameter (barrel): 9.2 – 11.0 mm/0.36″ – 0.43″
Weight (all): 22 g
Weight (cap): 9 g
Weight (body): 13 g