Vintage L S Starrett Athol Mass Mechanic's Improved Level with cross test vial.  It is 12" long.  I think it is the No.98 series but not sure.  The vials on the top and lower side are very good.  The top has the turn piece to cover the vials.  It fits into a custom wooden case with a slide top. Unpacked weight 4 pounds 12 ounces.   Buyer to pay shipping in USA.  Email with questions.