Features: _x000D_ 1. This is a Newton force measuring instrument, with maximum measuring range of 10N. _x000D_ 2. You can also use it to measure the mass of objects within 1kg. _x000D_ 3. Using high quality spring, this force meter can still maintain its measuring precision after many times of use. _x000D_ 4. Standard structure design, easy to operate. _x000D_ 5. Used as basic teaching instrument in physics mechanical experiments. _x000D_ _x000D_ Specification: _x000D_ Maximum range: 10N _x000D_ Material: Plastic, Iron _x000D_ Color: Green shell _x000D_ Length: 15.5cm/6.1in _x000D_ Package weight: Approx. 48g/1.7oz _x000D_ _x000D_ Package list: _x000D_ 1 * Spring Dynamometer _x000D_ _x000D_ Note: _x000D_ 1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. _x000D_ 2. Please allow slight error due to manual measurement. Thanks for your understanding.