These Ensso Piuma fountain pens were sent to me by Ensso.
Measurements
Length (capped): 139.9 mm/5.50″
Length (uncapped): 127.7 mm/5.0″
Length (posted): N/A
Diameter (barrel): 11.9 – 15.0 mm/0.47″ – 0.59″
Diameter (section): 10.6 – 12.5 mm/0.42″ – 0.49″
Weight (all): 97 g (brass)/34 g (aluminum)/55 g (titanium)
Weight (cap): 27 g (brass)/9 g (aluminum)/15 g (titanium)
Weight (body): 69 g (brass)/25 g (aluminum)/40 g (titanium)