Let’s have a look at Franklin-Christoph’s model 20, in a slightly vintage-looking material. I particularly enjoy the Christoph 1.9 mm music nib.
Measurements
Length (capped): 139.2 mm/5.48″
Length (uncapped): 123.5 mm/4.86″
Length (posted): 152.3 mm/5.99″
Diameter (barrel): 10.9 – 12.6 mm/0.43″ – 0.49″
Diameter (section): 10.5 – 12.5 mm/0.41″ – 0.49″
Weight (all): 16 g
Weight (cap): 4 g
Weight (body): 12 g
