BS 89-4:1990 Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for frequency meters standard by BSI Group, 08/31/1990
BS 89-5:1990 Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for phase meters, power factor meters and synchroscopes standard by BSI Group, 08/31/1990
BS 89-6:1990 Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for ohmmeters (impedance meters) and conductance meters standard by BSI Group, 08/31/1990
BS 89-7:1990 Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for multi-function instruments standard by BSI Group, 08/31/1990
BS 89-8:1990 Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for accessories standard by BSI Group, 08/31/1990
BS 89-9:1990 Direct acting indicating analogue electrical measuring instruments and their accessories. Recommended test methods standard by BSI Group, 08/31/1990
BS 6997:1990 Specification for elastomeric toroidal sealing rings ('O'-rings) manufactured from acrylonitrile-butadiene rubbers complying with BS 6996 standard by BSI Group, 08/31/1990
BS 7288:1990 Specification for socket outlets incorporating residual current devices (S.R.C.D .s) standard by BSI Group, 08/31/1990
BS 7324:1990 Guide to graphical symbols for use on equipment standard by BSI Group, 08/31/1990
BS 7328:1990 Specification for model steam engines and internal combustion engines for models standard by BSI Group, 08/31/1990
BS 7339:1990 Code of practice for supplementary checking of metallic materials of construction in pressurized systems standard by BSI Group, 08/31/1990
BS 6057-3.3:1990 Rubber latices. Methods of test. Determination of alkalinity of natural rubber latex concentrate standard by BSI Group, 08/31/1990