I know of three companies that make special catch test devices:
Mike Wern
President
Engineered Abrasives
11631 South Austin Avenue
Alsip, IL 60803 USA
(708)389-9700
http://www.engineeredabrasives.com Jim Whalen
VP Sales & Marketing
Progressive Technologies
4201 Patterson Ave. Street SE
Grand Rapids, MI 49512-4033 USA
(616)957-0871
Dominique Schwab
General Manager
Sisson Lehmann Wheelabrator Group
24 rue Camille Didier BP 39
Charleville-Mézières Cédex, F-08001 FRANCE
33-324-336319
