I acquired this descender from Pathfinder Sports in Tuscon, Arizona in 1980.
The device consists of a single piece of forged aluminum. The words "RUAPEHU NEW ZEALAND" are stamped on on side of the crosspiece between the two holes.
The Ruapehu can be used in several ways. The principal rappel configuration is similar to that of the Longhorn. Because of its small size, the Ruapehu bends the rope in a much tighter radius than the Longhorn, so it provides significantly more friction than the Longhorn. This is particularly evident with stiff lay caving ropes such as PMI. The effect is less noticeable with flexible kernmantle climbing ropes, and I prefer to limit the Ruapehu for use with the latter.
The Ruapehu also provides a slot for use as a Sticht plate. This is primarily used for belaying, but could also be used for rappelling. I prefer to avoid Sticht-type rappels because of the severe bend placed on the caving rope.
The Ruapehu is very well made and is nicely finished. Its small size and light weigh are significant advantages over the other devices discussed in this article. The device is probably more appropriate for climbers than for cavers; however, I feel that an eight is more appropriate in either case.
