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Overview IEC 60051-4:2018 sets forth the special requirements for direct acting indicating analogue frequency meters and their non-interchangeable accessories. As part of the IEC 60051 series, it com…
What is BS EN IEC 60051-4 about? BS EN IEC 60051-4 specifies direct acting indicating analogue frequency meters of the following types: pointer-type frequency meters vibrating-reed frequency meters W…