INSTRUCTIONS FOR MEASURING PRONGHORN

All measurements must be made with a 1/4-inch wide flexible steel tape to the nearest one-eighth of an inch. Enter fractional figures in eighths, without reduction. Official measurements cannot be taken until horns have air dried for at least 60 days after the animal was killed.

A. Tip to Tip Spread is measured between tips of horns.

B. Inside Spread of Main Beams is measured at a right angle to the center line of the skull, at widest point between main beams.

C. Length of Horn is measured on the outside curve on the general line illustrated. The line taken will vary with different heads, depending on the direction of their curvature. Measure along the center of the outer curve from tip of horn to a point in line with the lowest edge of the base, using a straight edge to establish the line end.

D-1. Circumference of Base is measured at a right angle to axis of horn. Do not follow irregular edge of horn; the line of measurement must be entirely on horn material.

D-2-3-4. Divide measurement C of longer horn by four. Starting at base, mark both horns at these quarters (even though the other horn is shorter) and measure circumferences at these marks. If the prong interferes with D-2, move the measurement down to just below the swelling of the prong. If D-3 falls in the swelling of the prong, move the measurement up to just above the prong.

E. Length of Prong: Measure from the tip of the prong along the upper edge of the outer side to the horn; then continue around the horn to a point at the rear of the horn where a straight edge across the back of both horns touches the horn, with the latter part being at a right angle to the long axis of horn.

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