Here you can read articles about older test instruments and other equipment that Göran Spetz has collected in Elastocon's museum over the years.
In the beginning of 1980, UK suggested the test method stress relaxation to ISO for measuring ageing in rubber. ISO started the work to prepare an ISO standard which got the number ISO 3384.
This TR-Tester was made by Björn Lundstedt at Fogutek in Sweden in the 50-ies.
The low temperature test called Gehman was first published in 1947.
This is the history of a Shore hardness tester that was purchased by Viskafors Gummifabrik in the mid-forties.
This is a hardness tester for the International Hardness Degree scale normal, IRHD-N. It was manufactured by Wallace Co in UK.
This is an early model of a hardness tester for the International Hardness Degree scale micro, IRHD-M, manufactured by Wallace Co in UK.