Design Concept 1 : Barrel must be thick.
Radius of the barrel is 13mm. The length with the cap at the end of the barrel should be a little less than 160mm. Length of the nib 22mm. The balance point is in the rear, at the point of 56`57%. This is the golden rule of fountain pen.
欢迎光临 钢笔论坛 (https://www.penbbs.com/) | Powered by Discuz! X3.2 |