CMC MPD vs Petzl ID Using an Inside 9 Mechanical Advantage
The “Inside 9” gives a 9:1 mechanical advantage and no person is needed to tend the CMC MPD and the Petzl I’D functioning as the progress capture for the raising system and thus provide an easy transfer back to a lowering system. Other product included in video footage: Sterling 7/16 HTP HTP (hyper-tenacity polyester) is […]
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