POST LEVEL - DRAPER 75042Rigid post level made from durable re - inforced ABS plastic. Designed to plumb pipes, posts, level RSJ's and other applications where vertical or horizontal is required. Attached with four powerful magnetic pads for working with steel posts and fitted with a strong elastic band for fixing to non - magnetic surfaces. Two horizontal and one plumb tubular acrylic vials for convenience with an accuracy of 0.1deg (1.75mm/M). Dimensions level 121 x 78mm.