Shore Hardness 1 (plastics) : A plastics hardness scale. As hardness increases, abrasion resistance tends to increase for some plastics while impact resistance may decline
George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}