Ohaus Primer Mechanical Balance, 2000g x 1g, 80410-00. This lightweight yet durable beginner balance is ideal for many simple classroom activities with both liquids and solids. Grades K-3 (Ages 5-9).

Ohaus School Balance, 2000g x 0.5g, SB1200. This rugged, lightweight balance is the perfect tool for introducing the science of metrology. Weigh everyday objects, from paper clips to books, or demonstrate mass measurement concepts with the included mass set. Grades K-6 (Ages 5-12).