0 votes
8 views
by
What are pencils HB 2B 4B 6B for?

1 Answer

0 votes
by
Numbers are then used to indicate the degree of softness – the higher the number the softer the lead and the blacker the mark. For example, a 2B lead is softer than a B lead and will produce a blacker mark. A 4B lead is softer than a 2B etc.
...