Đồng hồ đo độ cứng cao su, nhựa PTC Asker C model 604
The PTC® Asker C Ergo Style Durometer Model 604 measures the indentation hardness of soft rubber, sponge and plastic foam, elastomers, and similar materials. The Durometer comes complete with magnetic max hand, test block and carrying case.
Asker C Durometers meet JIS K7312.