Shore hardness number

Shore hardness number

A numerical scale for rating the hardness of a material by means of a device consisting of a small conical hammer fitted with a diamond point; the hammer strikes the material under test, and then the height of rebound (which is a measure of the hardness) is noted on a graduated scale; the higher the number, the harder the material.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.