http://www.google.com/search?hl=en&q=universal+testing+machines&btnG=Google+SearchI used to service and calibrate these machine as well as use them for tensile testing. New units may be prohibitive expensive so used market will probably be your answer (for example:
http://www.surplusrecord.com/srg/017532.htm) . Baldwin, Tinius Olsen, Satec, Instron, ATS are names to consider. Probably want at least a 60K, but preferably a 120K machine will be less limiting overall. Baldwins probably the heaviest duty machine, especially the older ones. Electronic displays are nice, smaller and much more precise, but do not be afraid of large needles and dials as have been the standard for many years. Make sure you get all the grips, shims and handles and accesories that go with machine because they are not cheap. Contact me if you wish.