Teach mass measurement with this durable plastic balance and weights. 500 ml buckets detach for easy clean up and hold up to one half liter. Sliding compensator for zero adjustments provides accurate measurements. Set includes five each of 5-gram and 10-gram Hexagram weights. Balance measures 24 1/2″L x 8 1/2″W x 14″H. Intended for ages 4 years and up.