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This International Standard specifes a vibration test code for determining, effciently and under standardized conditions, the magnitude of vibration at the handles of portable hand-held, internal-combustion-engine-powered forest and garden machinery, including chain-saws (with the exception of high-handled chain-saws), brush-cutters, grass-trimmers, pole-mounted powered pruners, hedge-trimmers and garden-blowers.Although the magnitudes measured are obtained in an artifcial operation, they nevertheless give an indication of the values to be found in a real work situation.