This pen was kindly lent to me by 4M – thank you!

Measurements
Length (capped): 145.0 mm/5.71”
Length (uncapped): 138.8 mm/5.46”
Length (posted): N/A
Diameter (section): 11.3—13.0 mm/0.44—0.51”
Diameter (barrel): 11.0 – 14.6 mm/0.43 – 0.58”
Weight (all): 39.0 g
Weight (body): 27.5 g
Weight (cap): 11.5 g