New Brass Rule.—

Our American exchanges this month describe and illustrate a new invention in brass rule, by Mr E. P. Powers, a practical printer, of St. Paul, Minn., for which a patent is pending. It is not easy to describe without diagrams, but some idea may be gained when we state that the rule, instead of being type height, is only about a long-primer high, grooved at the side, and fitted into grooves and dove-tails on specially-designed supporters. These are set in their appropriate places, and the rule is carried across the top of the quads and leads. All the pieces are made to even points. It is described as less expensive than ordinary rule, and as « time and labor-saving, » but we imagine the scheme is too scientific altogether for the ordinary comp.