ASME B107.2 pdf download SOCKETWRENCHES, EXTENSIONS, ADAPTORS, AND UNIVERSALJOINTS, POWERDRIVE(IMPACT) (INCH SERIES) 4.4 Markings Sockets and attachments shall be marked in a plain and permanent manner with the manufacturer’s name or with a trademark of such known character that the source of manufacture and country of origin may be readily determined. In addition, sockets shall be marked in a plain...