This standard applies to the measurement of the mesh size of knotted fishing nets. The mesh size of the fishing net is expressed by the length of the mesh and the inner diameter of the mesh.
GB 6964-1986 history
2010GB/T 6964-2010 Determination of mesh size of fishing nets
1986GB 6964-1986 Fishing net mesh size measurement method
GB 6964-1986 Fishing net mesh size measurement method was changed to GB/T 6964-2010 Determination of mesh size of fishing nets.