ČSN EN IEC 60051-2

This part of IEC 60051 applies to direct acting indicating ammeters and voltmeters having an analogue display. NOTE - For multi-function instruments, see IEC 60051-7. It also applies to: - direct acting indicating ammeters and voltmeters whose scale marks do not correspond directly to their electrical input quantity, provided that the relationship between them is known; - direct acting indicating ammeters and voltmeters and accessories having electronic devices in their measuring and/or auxiliary circuits. This document does not apply to: - special purpose instruments which are covered by their own IEC standards; - special purpose devices which are covered by their own IEC standards when they are used as accessories.