Line(s), Personal : A line up to 6. 1 m (20 ft) long, secured at one end to a man and fitted at the other end with a snap hook for attaching to a guide line when breathing apparatus is worn
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}