The camming device of the Grigri was so new (and patented) that it took companies a long time before they started making their own version that would do essentially the same thing. With the Grigri+, Petzl created an anti-panic mode that made it so when a climber moves the brake lever back too far, like how they would when they were panicked, the device auto-reengages the cam and pinches the rope. With the first lever-controlled Grigri, however, some belayers would panic and instead of releasing the lever and allowing the device to re-pinch the rope, they would hold down the lever and the climber would have an uncontrolled fall to the ground. Often resulting in major injuries or even death. If the belayer didn’t do this or was impaired by a falling rock or something like that, then the climber would fall to the ground. When a climber fell and the rope picked up speed through the device, in a basic ATC, all of the pressure of catching the climber would be on the belayer to move their brake hand into the brake position. The extra ridges add additional friction and make it even easier to control the speed of the rope and decrease the effort of the belayer. Since the basic tubular device, there have also been creations of ATCs that have ridged edges on the side of the ATC that has the rope slack controlled by the brake hand. As long as the climber’s weight is on the other end of the rope, they will lower. To move rope through the device, move the rope from the brake-hand up toward the belay device. Using a carabiner, attach the belay device (by the metal band) and the loop of rope to the harness’s belay loop.Take a bite of the rope (fold the rope) and place the folded end of the rope through one metal hole in the belay device.
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