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*Mid-Caucasian tur are intermediate between east Caucasian tur (which have horns like a blue sheep) and west
Caucasian tur (which have horns like an ibex). All tur with horns like a blue sheep should be measured by the
three-inch rule.

II. CIRCUMFERENCE OF HORN AT BASE

Measure the circumference of each horn at its base, or as close to the base (or hairline) as possible while holding
the tape tightly in a continuous loop and keeping it above any scallops or malformations. Keep the tape on horn
material at all times--not on bone or hair, or across air space. The measurement should be at the same angle as
the base of the horn; it need not be at a right angle. Do not press the tape down into depressions. Do not “walk” the
tape around the edge of an irregularly shaped base.

West Caucasian tur horns (Fig. 4) have protruding rings or cross--ridges like an ibex, however, there may or may
not be a ring at the base of the horn. This is because horns grow continuously from the base and produce new
rings throughout the life of the animal, so that at different times there may be either a protruding ring or a
depression at the actual horn base. If there is a protruding ring at the exact base of the horn, take the
circumference measurement around it. If not, in order to be fair, take the measurement around the ring that is
nearest to the horn base.

III. CIRCUMFERENCE OF HORN AT QUARTERS

Measure the circumferences of each horn at 1/4, 1/2 and 3/4 the distance from the base to the tip, based on the
length of the longer horn. First, divide the length of the longer horn (Measurement I) by four. (Quarter-length tables
are provided in the measuring kit.) Then, beginning at the base, mark both horns with pencil at these same
distances--the shorter horn must be marked at the same distances from its base as the longer horn. (It may be
helpful to put pieces of masking tape at the points where the quarter measurements will occur, and put the pencil
marks on the tape for easier viewing.) Measure the circumference of each horn at these three marks, using a tight
tape in a continuous loop at a right angle to the axis of the horn. (Note: If the shorter horn is broken off very short,
the third quarter mark may fall beyond its broken end, making Measurement C-3 impossible to obtain.)

Should a growth ring or other depression occur at one of the quarters, it is permissible to avoid it by taking the
measurement further toward the horn tip (but not toward the base). With west Caucasian tur horns, which have
protruding rings or crossridges like on those of an ibex, if a quarter does not occur at a protruding ring, it is
permissible to take the measurement around the nearest ring toward the horn tip (but not toward the base).

Record each circumference on the proper line. Circumferences are numbered in sequence, C-1, C-2 and C-3.

III. TOTAL SCORE

Total all measurements. When measuring in inches, record fractions in 1/8ths of an inch. Record metric
measurements to 0.1 cm.

Please Note: Pronghorns often have protuberances on their horns, but usually they are too small to increase any
measurement. In case of a large protuberance, either (1) move the tape very slightly to avoid it, or (2) measure up
to one side of it, add its calipered thickness, then continue the measurement from its other side.

PLEASE VISIT WWW.SAFARICLUB.ORG FOR THE FULL DETAILS.SCI OFFICIAL MEASURING
MANUAL AND MEASURING MANUAL POLICY IS RESTRICTED TO ACTIVE SCI MEASURERS ONLY

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