What is "jumars"

Usage examples of "jumars".

That clamp and cam device, infinitely lighter and stronger but otherwise no different than the jumars our grandfathers might have used, would get him back up on his own as long as the rope held and as soon as he could get the footloops attached.

It took only a minute or so for Paul to jumar up and over the lip, but getting Gary rightside up and then lifted up over the overhang so he could attach his own jumars, took a bit longer and involved some manhauling.

When Gary was out and untangled from his lines, harness, and jumars, we moved carefully around the crevasse, me in the lead and probing with my axe like a blind man in a vale of razor blades, and when we’d reached a good site for Camp One just at the base of the ridge, offering only a short climb in the morning to the crest of the northeast ridge that would eventually take us up onto the shoulder of K2 itself, we found a spot on the last patch of sun, unhooked the rope from our carabiners, dumped our 75-pound packs, and just gasped for a while before setting up camp.

Right now a couple of cans of climbing thread, jumars, and a grapnel would be welcome.

They clip themselves onto the fixed rope with jumars, metal clasps that will slide up the rope but not down.

He signals his need to the others and jumars down the fixed rope away from them, to get out of the way of the descent and obtain a little privacy.

Roger takes the lead and bashes ice from the rope, jumars up, scrabbles over the rock blindly with his crampon tips to get a purchase in the snow and ice.

Roger slips once and the jumars don’t catch on the icy rope for about three meters, where they suddenly grab hold and test his harness, and the piton above.

Roger slips once and the jumars don't catch on the icy rope for about three metres, where they suddenly catch and test his harness, and the piton above.