This Japanese Industrial Standard states the requirements which a measuring instrument for vibration severity of machines should meet if inaccuracies of measurement, particularly when making comparisons between one machine and another, are not to exceed a specific value. Instruments meeting the requirements of this Standard are suitable for use in carrying out the procedures specified in ISO 2372 and JIS B 0906 and are designated "Measuring instruments for vibration severity in rotating and reciprocating machines". The instruments covered by this Standard give direct indication or recording of root-mean-square vibration velocity, which is defined as the measuring unit of the vibration severity.

ISO 2954:1975 - Identical