The Sand Timer Long Time is a must-have for any experimental setup, whether in physics, chemistry, or environmental science. This serves as a precise timekeeper for motion experiments in physics, aids in maintaining precise reaction conditions in chemistry, and proves valuable in estimating particle settling rates in environmental science studies. This sturdy sand timer boasts molded end caps and thick wall surrounds for maximum durability. 

Perfect for group or solo activities, whether it's for games, events, or educational purposes like science or math. 

*also called egg timer