A Petzl Croll is an ascending devicePetzl Sport - Croll Chest Ascender
/ref> used in caving and industrial rope access made by the French company Petzl. Its name comes from the town Crolles where Petzl's company headquarters are located but might also be a reference to the nearby cave system of the Dent de Crolles, the exploration of which triggered a lot of technical effort leading to innovation in caving equipment.

Usage

The Croll is normally used in the chest position and in conjunction with an upper ascender or

Jumar An ascender is a device (usually mechanical) used for directly ascending, or for facilitating protection, with a fixed rope when climbing on steep mountain terrain. A form introduced in the 1950s became so popular it began the term "Jumar" for ...

. This configuration allows a climber, caver or rope access worker to rapidly ascend a rope.

History

In 1968 Bruno Dressler asked Fernand Petzl, who worked as a metals machinist, to build a rope-ascending tool, today known as the Petzl Croll, that he had developed by adapting the

to the specificity of pit caving. Following these developments, Fernand Petzl started in the 1970s a small caving equipment manufacturing company Petzl.

Standards

* EN 567 This standard allows the Croll to be used by IRATA qualified technicians. * EN 12841 * CE 0197

References

Climbing equipment Caving equipment {{caving-stub