Karen Jacobsen, a private dairy consultant based in Athens, Ga., uses this PVC pipe to measure heifer height. The pre-marked stick is lightweight and portable, which makes it easy to use just about anywhere.

To make one of your own, you will need a 5-foot length of 3-inch diameter PVC pipe. Then use a yardstick with a permanent marker, or peel-and-stick adhesive numbers, to mark height in inches on the pipe.