Pitch 05 : (1) The slope of a roof. (2) The angle between the ground and a leaning ladder, measured on the underside. (3) The distance between consecutive threads of a coupling. (4) Resin from certain evergreen trees
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}