2016DIN EN 59:2016-06 Glass reinforced plastics - Determination of indentation hardness by means of a Barcol hardness tester; German version EN 59:2016
2016DIN EN 59:2016 Glass reinforced plastics - Determination of indentation hardness by means of a Barcol hardness tester; German version EN 59:2016
1977DIN EN 59:1977 Glass Reinforced Plastics; Measurement of Hardness by Means of a Barcol Impressor