Retro 51 Tornado Sir Isaac Mechanical Pencil

Retro 51 Tornado Retro 51 Tornado mechanical pencil, "Isaac Newton" with a printed finish resembling several of Sir Newton's mathematical equations and calculations. Activate the lead with a twist on the top of the pencil. The huge eraser at the top of the pencil is for those who make the occasional mistake. An extra tube of 1.15 mm lead and a pack of erasers are included.