AFrame Ladder : A ladder or arrangement of ladders similar to a stepladder used by firefighters to change a sprinkler head, check a ceiling light fixture, etc
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}