Petzl ZIGZAG PLUS

The Petzl ZIGZAG PLUS is a mechanical prusik for arborists that builds on the original Zigzag with an added friction element, so it can be set up for a wider range of climbing systems. Climbers choose it for the smooth, precise descent control the Zigzag is known for.

How the ZIGZAG PLUS differs from the Zigzag

The standard Zigzag is a chain of links that replaces a friction hitch on a doubled rope. The ZIGZAG PLUS keeps that mechanism and adds an extra friction element, which gives more control and lets Petzl approve it for more ways of climbing. If you climb on more than one system, that flexibility is the main reason to pay the extra.

On the tree it behaves like a Zigzag: you advance it with the pulley, rest on it, and release with the handle for a controlled descent. Read Petzl's instructions for the exact configurations and rope types approved. See other devices for MRS to compare.

Setup, training and inspection

Rope choice matters with any mechanical prusik. Use only ropes within Petzl's listed range, and expect the feel to change with rope diameter, cover and wear. Practice close to the ground with a trained climber before you take it aloft, and follow ANSI Z133 and your company's procedures.

Inspect it before every climb: check the links and pulley for wear and grooving, make sure everything moves freely, and clean out sap and grit. Retire it if parts are worn past Petzl's limits or it has been shock loaded.

Keep a record of when you put it into service and how much use it gets, and replace worn parts or the whole device as Petzl's instructions describe. A mechanical prusik is precise but only as good as its condition.