For the purpose of the control procedure it is necessary to specify the types of gauge to be used how they are to be used, how the meshes to be measured are to be chosen, the method by which each of them is to be measured, how the mesh size of the net is to be calculated, the procedure for the selection of twines of meshes for the assessment of thickness of twine, and to describe the sequence of the inspection procedure.
Zaradi postopka nadzora je treba opredeliti tipe meril, ki jih je treba uporabljati, kako jih je treba uporabljati, kako je treba izbrati mrežna očesa, ki jih je treba izmeriti, načine merjenja vsakega od mrežnih očes, kako je treba izračunati velikost očesa mreže, postopek izbiranja vrvic mrežnih očes za ocenjevanje debeline vrvice, in opisati zaporedje pri postopku pregledovanja.