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pencil drawing
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Pencil Drawing

Grading and classification
Many pencils across the world, and almost all in Europe, are graded on the European system using a continuum from “H” (for hardness) to “B” (for blackness), as well as “F” (for fine point). The standard writing pencil is graded HB. According to Petroski, this system might have been developed in the early 20th century by Brookman, an English pencil maker. It used “B” for black and “H” for hard; a pencil's grade was described by a sequence or successive Hs or Bs such as BB and BBB for successively softer leads, and HH and HHH for successively harder ones.
As of 2009, a set of pencils ranging from a very hard, light-marking pencil to a very soft, black-marking pencil usually ranges from hardest to softest as follows:

File information
Filename:438011.jpg
Album name:Art & Creativity
Rating (1 votes):55555
Keywords:#pencil #drawing
Filesize:78 KiB
Date added:Dec 01, 2011
Dimensions:700 x 602 pixels
Displayed:50 times
URL:displayimage.php?pid=438011
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