BS 89:1977:1978 Edition
$142.49
Specification for direct acting indicating electrical measuring instruments and their accessories
Published By | Publication Date | Number of Pages |
BSI | 1978 | 55 |
Applies to ammeters, voltmeters, single-phase and polyphase wattmeters, varmeters, phasemeters, power factor meters, frequency meters and ohmmeters, for direct and alternating current.