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This part of ISO 28927 specifies a laboratory method for measuring handtransmitted vibration emission at the handles of handheld, powerdriven rammers. It is a typetest procedure for establishing the magnitude of vibration in the gripping areas of a machine run under specified test conditions. It is intended that the results be used to compare different models of the same type of machine. This part of ISO 28927 is applicable to rammers, backfill rammers, pawing rammers, sand rammers and stampers (see Clause 5), driven pneumatically or by other means, intended for use in foundries, on building sites, etc., and with, for example, butts or peens made of cast iron or rubber, used for ramming of casting sand or in stamping work. NOTE To avoid confusion with the terms “power tool” and “inserted tool”, machine is used for the former throughout this document.