The full-color reference photos represent various conditions of painted, unpainted, rusted, and welded hot-rolled carbon steel surfaces prior to and after power- and hand-tool cleaning. This guide is used to supplement reference standards SP 2 (Hand Tool Cleaning), SP 3 (Power Tool Cleaning), SP 11 (Power Tool Cleaning to Bare Metal), and SP 15 (Commercial Grade Power Tool Cleaning). Includes English, Spanish, and Portuguese languages.