I acquired this heavily used Grillon from Mike's Pawn in 2007.
The Petzl Grillon is a flipline adjuster. The device is 117 mm tall, 67 mm wide, and 42 mm thick. Mine weighs 208 g. The set includes a 12.5 mm kernmantle flipline. I did not photograph the one that came with this Grillon because the line was far beyond the end of its safe working life; besides, it smells bad.
The Grillon is clearly related to the Petzl Grigri. The main difference is that the Grillon replaces the lever on the v with a knob, and the Grillon has a small screw in the rear that keeps the cover closed. The front cover is stamped with "GRILLON" and a flipline rigging diagram, while the rear is stamped with the Petzl logo, "MADE IN FRANCE," WARNING PROPER TRAINING IS ESSENTIAL BEFORE USE,", the "Reading is Dangerous" icon, "EN 358," and "CE0197." The cam lever has a climber icon in an arrow, a carryover from the Grigri.
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©2007, Gary D. Storrick