Clegg Impact Tester
Revision as of 22:23, 16 March 2008 by Kdanneberger (talk | contribs)
1. The most commonly used device for testing field hardness, also known as the Clegg hammer or CIT.
Surveyor using a Clegg Impact Tester to check hardness.
Source: http://aginfo.psu.edu/PSA/w2002/ballgame2.html