The Rockwell Scale is a method used to measure the hardness of materials, particularly metals and plastics. It assesses hardness by determining the depth of penetration of an indenter under a specific load. Different scales, such as Rockwell A, B, and C, use various indenters and loads to accommodate different materials. This scale is widely used in manufacturing and engineering to ensure materials meet required specifications. The results are expressed as a single number, making it easy to compare the hardness of different materials. The Rockwell Test is favored for its speed and simplicity compared to other hardness testing methods.