Description _x000D_ _x000D_The sciencent spring balance hanging spring scale has tubular spring scales with different measurement ranges for determining weight. Each scale has a ring at the tops for hanging, and an s-hook at the bottom for attaching the sample to be weighed. The clear plastic housing of the scales allows observation of the extension and retraction of the springs. A spring scale, or spring balance, is used in classroom and field applications to measure weight and to explore physics principles of force and mass. _x000D_ _x000D_Features _x000D_ _x000D_- Color: Yellow. _x000D_- Material: Plastic. _x000D_- Size: 25.00 x 2.50 x 2.50cm/ 9.82 x 0.98 x 0.98 inch. _x000D_- This spring scale have a clear plastic body that is calibrated in both grams and newton. _x000D_- Both rings and hooks are plated and each can be zeroed with the metal nut located at the tops. _x000D_- Each scale has a ring at the tops for hanging, and an s-hook at the bottom for attaching the sample to be weighed. _x000D_- Clear plastic housing allows observation of the extension and retraction of the spring. _x000D_- The dynamometer is used for gravity measurement and tension measurement.Packing list4 x spring scales