The recommendations contained in this document are based upon the following premises@ which are believed to represent the broadest base of general agreement among proponents of the major unit systems: (1) That for most scientific work and technical work of an analytic nature the International System of Units (officially designated SI)1 is generally superior to other systems; that this is particularly true for the fields of electrical science and technology since the common electrical units (ampere@ volt@ ohm@ etc) are included among the SI units; that the International System of Units is more widely accepted than any other as the common language in which scientific and technical data ought to be expressed (2) That various units of the British and American systems (hereafter referred to as British-American units)@ particularly the inch and the pound@ are the fundamental units used in the standards followed by a large part of the world's manufacturing industry; that this will continue to be true for some time (3) That unit usage can and should be simplified; that one means toward such simplification is the identification of obsolete and unneeded units@ and that another is the adoption of more rational links between SI units and units of other systems