Subscribe

Pencil Hardness Grading Scales

Specialty:

General content (available to all)

Objective:

ICD-10:

Description:

The graphite in a pencil may vary from soft to hard depending on the mix of graphite, clay and other ingredients. There are various scales that are used to describe the hardness of the graphite..

To read more or access our algorithms and calculators, please log in or register.

RECENT TWEETS

medal descover
medal iphone