United's TRU-BLUE II Rockwell Hardness Tester uses the latest electronic controls, coupled with high-precision load cells to provide highly accurate penetration measurement data. It is also capable of measuring Brinell and Vickers scales as an optional capability. Available in test heights from 10”, 14” and 18”. Custom sizes available! Meets all NIST, ISO, CE, ASTM requirements. 15 Superficial scales: 15N, 30N, 45N, 15T, 30T, 45T, 15W, 30W, 45W, 15X, 30X, 45X. 15Y, 30Y, 45Y. 15 Regular scales: A, B, C, D, E, F, G, H, K, L, M, N, P, S, V.