introduced to the climbing market. This page (archived) gives an overview on the older jumar models. A current model is still in production. French caver Fernand Petzl developed a mechanical rope ascender in 1968, and his company Petzl continues to produce both handled and handleless models that are popular with mountaineers and cavers today. Other countries, notably the United States, have also produced rope ascenders. Other names for different styles of ascenders include 'ropeman' and 'tibloc'. References Caving equipment Climbing equipment Mountaineering equipment