New 8" Testing Table for Wilson Rockwell Hardness Testers. This flat testing table is a popular work support for large test specimens. When the table (which screws onto the elevating screw) is being used, the vertical capacity is reduced by about 1"/25mm. This table fits most standard Wilson Rockwell Hardness testers as well as M, MJ & L Brinell hardness testers built since 1976. Diameter is 203mm/8 inches.