Whats the best way to get value of primary and secondary coil in transformers?

I have few transformers and I need to get uH of the coils, unlike capacitors or resistors write or use color code, all I see on this 2 transformers is; 6119008400 LSE 0342



Any way I can get the uH??Whats the best way to get value of primary and secondary coil in transformers?There are meters that measure inductance. You can also build an oscillator circuit that uses inductors, measure the frequency of the oscillator with your unknown inductors, then use the formula for that particular oscillator to find the unkown 'L' value.



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