hand-held tong-like tool / indexable tool / broken tools / metal / metal cutting machines / rotary tools / back facing devices / work-mounting &c centring devices / form tools / roller-box tools / Automatic electric control systems / metal sheets / electric control systems / human power driving systems / usual tool / i.e. devices / metal shavings / i . e .ii . e ..i . e .ei . e ..i . e . i . e .di . e .ei . e .vi . e .ii . e .ci . e .ei . e .si . e . / /
UKC Key, Section B; Performing Operations