Today, there are only a small number of craftsmen who make fountain pens all hand-made. Uehara, aged 82, has been engaged in this work since he was 19. He makes special fountain pens that fit perfectly in the hand of each customer, taking each person's particular handwriting into consideration. His skill of adjusting the pen point, using a loupe, is remarkable, because a difference of 0.01 millimeters does affect the smoothness of writing.