ISO 28927-1:2009 specifies a laboratory method for measuring hand-transmitted vibration emission at the handles of hand-held power-driven angle and vertical grinders. It is a type-test procedure for establishing the magnitude of vibration in the gripping areas of a machine fitted with a specified test wheel and run under no‑load conditions. The method has been established for surface grinding tasks only (cutting and sanding generally create lower vibrations). It is intended that the results be used to compare different models of the same type of machine.
ISO 28927-1:2009 is applicable to hand-held machines, driven pneumatically or by other means, intended for grinding, cutting-off and rough sanding, with bonded, coated and super-abrasive products for use on all kinds of materials. It is not applicable to grinders used with wire brushes or to die or straight grinders.