Unique OHAUS design offers increased durability and superior accuracy employing a precision engineered metal beam for years of maintenance-free classroom use. Dual style, interchangeable pans allow for a broader range of objects to be weighed including a flat pan similar to the OHAUS Harvard Trip and a bowl-type pan for use in weighing round objects. Stackable on either platform to maximize storage space when not in use. A built-in transportation/storage lock helps to protect the longevity of the Harvard Junior by eliminating oscillation and preventing unnecessary wear when the balance is being delivered to your classroom or while stored during non-use. Includes a free teacher developed, standards-based activity guide with background information and assessments_x000D_ The OHAUS Harvard Junior has the power to unleash the young scientist in any student. With its unique design, the Harvard Junior offers the combination of a colorful and inviting, plastic two-pan balance with the durability and accuracy of the more expensive Harvard Trip, by incorporating a precision-engineered metal beam and zero adjust compensator.