Myler mouthpiece designs correspond to the Myler Level of a horse's behavior and experience. The mouthpiece Levels start at Level 1, which apply maximum tongue pressure, and go up to Level 3, which apply minimum tongue pressure and provide the most tongue relief. Most horses can avoid Level 1 altogether; it's quite possible that your horse can enter the Myler System at Level 2, 2-3, or even 3. The overview of mouthpiece levels here explains how the design and function changes from level to level.
To measure your horse accurately, you will need a wooden dowel or the handle of a wooden spoon.
- 1. Insert the dowel in your horse's mouth where the bit would normally sit.
- 2. Wait until the horse relaxes in his mouth and stops chewing on the dowel.
- 3. Mark the dowel on each side of the face, where the lips end.
- 4. Remove the dowel and measure between the two marks.
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