The record of survey shall be a map, legibly drawn, printed, or reproduced by a process guaranteeing a permanent record in black on tracing cloth, or polyester base film, 18 by 26 inches or 460 by 660 millimeters. If ink is used on polyester base film, the ink surface shall be coated with a suitable substance to assure permanent legibility. A marginal line shall be drawn completely around each sheet leaving an entirely blank margin of one inch or 25 millimeters.