Marked at every foot, tenth, and 0.02 foot with total elevations. 4" Wide. Available in 3-1/3 sections for numbering to 13.33. Finished with a special porcelain enamel to ensure easy reading and resist rust or discoloration. Can even be used in salt water! Each gauge or gauge section is accurately graduated. Provided with grommeted holes for fastening with No. 8 round head screws.