Q. In Rockwell test for hardness on B scale (Solved)
1. A diamond cone is used
2. A mechanite ball is used
3. A steel hammer is used
4. A steel ball is used
5. A plastic hammer is used
- d. A steel ball is used
1. A diamond cone is used
2. A mechanite ball is used
3. A steel hammer is used
4. A steel ball is used
5. A plastic hammer is used