I was reading about testing rubber made for billiard table cushions
(Book: Billiards & Snooker A Trade History by J. R. Mitchell 1981), and the book mentions testing to be sure the rubber "rebounds" in the expected way.
This testing is done with a "Dunlop Tripsometer" to be sure the rebound will be between 63% and 65%.
So I searched for "Dunlop Tripsometer" and found the following interesting page on rubber testing...
http://www.indiarubberdirectory.com/engineering/rubber_testing_methods.asp
(Book: Billiards & Snooker A Trade History by J. R. Mitchell 1981), and the book mentions testing to be sure the rubber "rebounds" in the expected way.
This testing is done with a "Dunlop Tripsometer" to be sure the rebound will be between 63% and 65%.
So I searched for "Dunlop Tripsometer" and found the following interesting page on rubber testing...
http://www.indiarubberdirectory.com/engineering/rubber_testing_methods.asp