Knoop Test Blocks:(25x25x8mm)800-900HK1, 800-900HK0.5, 800-900HK0.3, 800-900HK0.2400-600HK0.2, 400-600HK0.1200-300HK0.1, 200-300HK0.05
We supply all test blocks calibrated and uncalibrated.
700-800HV3700-800HV5
550-630HLG460-540HLG