Här kan du läsa artiklar på engelska om äldre provningsinstrument och annan utrustning som Göran Spetz samlat i Elastocons museum under åren.

Shore hardness tester

This is the history of a Shore hardness tester that was purchased by Viskafors Gummifabrik in the mid-forties.

TR tester made by Björn Lundstedt at Fogutek in Sweden in the 50-ies

This TR-Tester was made by Björn Lundstedt at Fogutek in Sweden in the 50-ies.

Old hardness tester IRHD-N from Wallace Co

This is a hardness tester for the International Hardness Degree scale normal, IRHD-N. It was manufactured by Wallace Co in UK.

Old hardness tester IRHD-M from Wallace Co

This is an early model of a hardness tester for the International Hardness Degree scale micro, IRHD-M, manufactured by Wallace Co in UK.

Old Gehman tester manufactured by Wallace Instruments, UK.

The low temperature test called Gehman was first published in 1947.