ISO 17101:2004 gives specifications and acceptance criteria for the thrown-object testing of rotary and flail mowers used in agriculture. It is not applicable to mowers with an articulated arm, mowers with one or more vertical axis designed for mulching, pedestrian controlled motor mowers, lawn mowers or machines designed as lawn mowers, inter-row mowing units, or machines designed for highway and road maintenance only. If a machine is also designed for use outside agriculture, other thrown object tests may apply.