Rappel devices (Descenders)
These devices are friction brakes which are designed for descending ropes. Many belay devices can be used as descenders, but there are descenders that are not practical for belaying, since it is too difficult to feed rope through.
Article....
Senin, 26 November 2007
Langganan:
Posting Komentar (Atom)
0 komentar:
Posting Komentar