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My understanding is that the Grigri that Petzl replaced with the Grigri 2 was not actually the first generation of the device, and an even older model existed before the Grigri "1". Anyone have a photo of it? Maybe with some history info?
I was surfing for something, or other and came across website listing a lot of interesting climbing related hardware. Belay Devices
^ what he said. The Petzl stop descender was the origin of the gri-gri, according to the petzl book.