Zig Calligraphy Pen

154th day of 2017.

I like the cap better, it is transparent to view the inside, smart.
Transparent cap is by no means new invention, but seldom seen in technical pens where it has various sizes. I guess, they thought the big print on the pen barrel and the mini print on its cap ends is enough?

Somehow, I may not always relate the numbers with its actual size... so I do appreciate the transparent cap.