This pen was kindly sent to me by Salvatore of Leonardo Officina Italiana – grazie mille!

Measurements
Length (capped): 141.4 mm/5. 57”
Length (uncapped): 126.9 mm/5.00”
Length (posted): 163.9 mm/6.45”
Diameter (section): 10.5 – 12.3 mm/0.41” – 0.49”
Diameter (barrel): 11.0 – 14.3 mm/0.43” – 0.56”
Weight (all): 27.0 g
Weight (cap): 19.0 g
Weight (body): 8.0 g