Gadgets that can perform more than one function are always welcome especially those that have to be carried around. It is for this reason that the Petzl Rescucender Ascender is deemed a useful tool by some climbers. It is designed for ascending on fixed ropes, though it is more of a back-up belay device. It is also used for rescue work, and for hauling heavy loads. In hauling systems, it is useful as a progress capture device.
The cam of the Petzl Rescucender is curved in a way that its clamping force over the rope is spread over a wide area. This minimizes damage to the rope which could eventually lead to rope failure.
The cam surface is smooth allowing the rope to glide over it when pushed up. When load is applied, however, it instantly locks the rope. When the cam is disengaged, the Rescucender slides downwards with ease. The cam’s axle is locked with a pin for increased safety. This means that you will need to perform two separate actions to disconnect the ascender from the rope.
A thin cable attaches the jaw to ascender’s body thus providing spring action.
The Petz Rescucender Ascender is made of milled components. This results in a very strong and durable ascending device with a strength rating of 25 kilonewtons. It weighs 225 grams, and is compatible with ropes sized 7/16 to ½ inches.