Pencil – Wikipedia, the free encyclopedia

http://en.wikipedia.org/wiki/Pencil

I went to Wikipedia looking for clarification on pencil numbering (e.g. HB, 2B, etc.) and instead found a hidden history of monopoly and international competition, featuring cameos from Faber, Cont

This entry was posted in Science and tagged , , . Bookmark the permalink. Post a comment or leave a trackback: Trackback URL.

Post a Comment

Your email is never published nor shared. Required fields are marked *

You may use these HTML tags and attributes <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

*
*