In 2008, Mitsubishi Pencil released the Kuru Toga, a mechanical pencil whose lead always stays sharp. The pressure of writing moves a gear connected to the lead. With each stroke, the lead turns a little.
In 2008, Mitsubishi Pencil released the Kuru Toga, a mechanical pencil whose lead always stays sharp. The pressure of writing moves a gear connected to the lead. With each stroke, the lead turns a little.