GB/T 4074.2 stipulates the following test methods: ——Test method 4: Refer to GB/T 4074.1 for the definition of dimension measurement, general principles of test methods and list of winding wire test methods.
GB/T 4074.2-1999 history
2008GB/T 4074.2-2008 Winding wires.Test methods.Part 2:Determination of dimensions
1999GB/T 4074.2-1999 Test methods for winding wires-- Part 2: Determination of dimensions