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

Measurements
Length (capped): 137.2 mm/5.40”
Length (uncapped): 124.9 mm/4.92”
Length (posted): 158.7 mm/6.24”
Diameter (section): 11.3—16.6 mm/0.40—0.44”
Diameter (barrel): 7.8 – 13.4 mm/ 0.31” – 0.53”
Weight (all): 40.5 g
Weight (body): 23.5 g
Weight (cap): 17.0 g