Developed during four years of research and testing, the MPD is a major advancement in technical hardware for professional rope rescuers - a multi-purpose device that performs all functions for main lines, belay/safety lines, tag lines and hoisting lines. THe MPD can be used to tension high lines and guiding lines. Training and on-scene rigging can be greatly simplified by having a single device. Rescue system changeover from a lowering system to a raising system becomes faster and safer by eliminating the need to switch out and replace hardware. The CMC Rescue MPD is weighs 3 pounds, is certified to NFPA 1983 - general use, meets BCCTR Rescue Belay Competency Criteria and is for use on ropes from 7/16 to 1/2 inches.