While the mine's supply dwindled, its history ultimately cannot be erased, leading to the creation of one of the most iconic writing instruments known to man, the No. 2 pencil. The Winthrop family ...

No.2 pencils are widely used, but you may not know what the number actually refers to. This video explains how pencils developed into their modern form and the significance of the labeled numbers.

While the mine's supply dwindled, its history ultimately cannot be erased, leading to the creation of one of the most iconic writing instruments known to man, the No. 2 pencil. The Winthrop family ...