How to Measure Bits for Horses

Not every bit fits every horse. A properly fitting bit is necessary not only for the comfort of the horse but for proper performance in every equestrian discipline. An ill-fitting bit can cause injury to the horse, behavior issues and dangerous equine habits. Proper bit fitting is easier than it sounds and should be undertaken by every horse owner who rides with a bit.

Things You'll Need

  • Halter
  • Lead rope
  • Measuring tape
  • String
  • Marker or pen
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Instructions

    • 1

      Lead your horse to an area where he has to pay attention to you and not other members of the herd, other riders or distractions. The bit should fit over the bars of the mouth, the soft tissue area on the gums between the front teeth and molars. When the bit is in proper position, it should look like the lips of the horse are being lifted.

    • 2

      Take the piece of string and run it horizontally over her tongue and across her teeth.

    • 3

      Use the pen to mark each side of the string where it meets the edge of the horse's lips.

    • 4

      Remove the string from the horse's mouth and measure the area between the two marks. Add 1/2 to 3/4 inch to this number to determine the size bit that will correctly fit your horse.