Science Fair Project Encyclopedia
Durometer
A durometer is a tool used to measure hardness.
There are various Durometer scales in use today. They include: A B C D DO O OO OOO T M
Various scales are used to measure hardness ranging from sponge to steel. For example, the Shore 'A' scale ranges from 0 to 100 units and usually refers to rubber or synthetics. A20 would be an extremely soft silicone rubber while A85 would be a hard rubber skateboard wheel. The Rockwell B scale measures in the range of soft steels. Rockwell C measures harder steels.
Durometers typically work by measuring the resistance, in newtons, of a pin as it penetrates a given material.
Last updated: 05-09-2005 16:22:02
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details