- Order number: 39400
This is the most versatile balance available for the elementary grades. Large buckets and pans are perfect for introducing your students to their first concept of balance. The number line across the arm of the balance can be used for numbers, counting, addition and subtraction, and is self-checking by balancing. Non-removable plastic compensators are incorporated into the beam for zero adjustment. This number balance comes with 20 hanging masses. Balance is 16" tall.