Posted on December 19, 2017December 21, 2017 by Pulse AssentISO 4545-3:2017 Metallic materials. Knoop hardness test Calibration of reference blocks Link: ISO 4545-3:2017 Metallic materials. Knoop hardness test Calibration of reference blocks Source: BSI Standards Related Posts:Government to look at ways new high-tech materials…Global agreement in green tech will open doors for UK PLCNew UK initiative to shape global standards for…The government unveils new “Energy Bills Discount…Businesses to be given UK product marking flexibility