FEATURES

1. Portable. Easy to use. Can be used in any positions and in any space that will allow for an operators hand.
2. HR hardness testers provide direct, true Rockwell® readings, without extra calculations. Standard testers read directly in these fifteen Rockwell scales: A, B, C, D, E, F, G, H, K, L, M, P, R, S, and V. Superficial models are for testing case-hardened stocks, thin stock and soft materials in the Rockwell N and T scales.
3. All HR hardness testers are built to meet or exceed ASTM Standard E-110. Then, each tester is individually calibrated.
4. HR tester model numbers tell you the maximum opening (dimension A), and throat depth (dimension B). The letters tell you the type of tester or specific application.

"S" indicates a Superficial tester. 15,30 and 45 Kg loads, Rockwell N and T scales.
"ST" indicates a Superficial tester for Tubing.