the invention relates to a device for measuring water lines intended for plotting and verification the waterline on ships when they are docked on floating docks during surgerytheir repair.the apparatus according to the invention, estealcatuit from a flatten that go through a support, guidancea horizontal slide guide through which a clapper provided with one end sharp,perpendicular to the guide support mounted another medium for guiding which slide vertically and mrs. riglete u which is located an indicator mounted alsoperpendicular to the clapper.rigletele are fixed in the guiding by some screws thus allowing verification and written on the drawing rate, draught, in millimetres or standing.
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