Accurately measures birthweights of newborn beef calves within 24 hours after birth. Place the tape around the coronary band of the front hoof, tighten, and read the circumference in centimeters and the birthweight in pounds from the tape scale. One side measures bulls, the other heifers. Weight at birth may vary ą7.0 lbs. for bulls and ą6.4 lbs. for heifers due to hour of age and shrink or fill.