Two inclinometers can be purchased at a hardware store and are quite inexpensive. Yo-Yo Test Subjects run back and forth between markers 20 meters apart at speeds controlled by a cassette. The speed is progressively increased. When the subject can no longer maintain the speed, the test is terminated. The National Coaching Foundation England.
Places chalk on middle finger.
Jump as high as possible and touch metered wall with chalked finger. After best of three tries, take Gross Height .