Machine tools and hand-held tools, other than hand-operated, in the nature of portable electric power tools namely, saws, circular saws, jig-saws, drills, planers, sanders and grinders; parts, fittings, accessories or attachments for any one of the aforesaid namely, guides adapted to guide a portable electric power tool in a straight line, saw guides adapted to guide a portable electric saw to make a linear cut at a selectable variable angle