hardness of soft materials such as rubber, elastomers and plastics measured as the resistance to indentation of the blunt indentor point of the durometer while the value may be taken immidiately or after a very short specified time (see: Shore hardness, durometer; compare: scleroscope hardness), suhteliselt pehmete materjalide nagu kummi, elastomeerid ja plastid kõvadus, mida mõõdetakse nüri otsaga indentori sissesurumise teel materjali duromeetrit kasutades (vt Shore'i kõvadus, duromeeter; vrd põrkekõvadus)