Why were the letters 'H' and 'B' selected to designate pencil lead hardness (2H, H, HB, B, 2B, etc.)? - Quora
![SYGA Professional Sketch and Drawing Pencils ,Art Pencil Box Contains 12 Pieces Set B 2B 3B 4B 5B 6B 7B 8B HB H 2H F : Amazon.in: Home & Kitchen SYGA Professional Sketch and Drawing Pencils ,Art Pencil Box Contains 12 Pieces Set B 2B 3B 4B 5B 6B 7B 8B HB H 2H F : Amazon.in: Home & Kitchen](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/71U2xIBej1L._AC_SS450_.jpg)
SYGA Professional Sketch and Drawing Pencils ,Art Pencil Box Contains 12 Pieces Set B 2B 3B 4B 5B 6B 7B 8B HB H 2H F : Amazon.in: Home & Kitchen
![What is the Difference Between H and B Pencils? | Art Inspiration | Inspiration | Art Techniques | Encouragement | Art Supplies What is the Difference Between H and B Pencils? | Art Inspiration | Inspiration | Art Techniques | Encouragement | Art Supplies](https://keetonsonline.files.wordpress.com/2013/06/pencil-lead.jpg)