| 摘要 |
The farrier's instrument includes a vertical rod, preferably with an elongated marking slot therein, a spaced pair of horizontal plates slideably connected to the vertical rod through the slot and lockable in place, and a rear rod, the upper end of which is pivotably connected to the upper end of the vertical rod, and which extends downwardly and rearwardly therefrom at an acute angle. The upper end of the rear rod is expanded and defines a slot in which a pointer connected to the upper end of the vertical rod extends for marking the exact angle between the two rods, by reference to indicia lining the slot. Preferably the pointer acts as a limit bar, and a spring is connected to the rear rod for biasing it toward the vertical rod. The plates may include indicia to measure the medial/lateral assymmetry of a horse's hoof. The instrument is used by turning over a horse's hoof, marking the vertical midline of the hoof with the vertical rod after positioning the rear rod against the front of the hoof, and measuring the medial/lateral assymmetry.
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