Description A replacement Rockwell hardness tester diamond-tipped indenter. This is necessary to test in the Rockwell C range used by knifemakers to measure the hardness of steel. Measurements: 26mm overall length 6.3mm spigot diameter with one flat face – 6mm measured at flat 9.9mm spigot length 10mm collar diameter 2.6mm collar length 8.9mm tip diameter
