The plastic tubular Newton spring balances are designed for educational and experimental use, featuring a convenient color-coded system for easy identification of different ranges. These balances are scaled in both grams and Newtons, allowing for versatile measurement options. The spring mechanism is clearly visible, providing transparency in functionality, and includes a built-in zero adjustment for precise readings. With a capacity of 500 grams or 5 Newtons, these balances are ideal for classroom demonstrations and practical applications in physics.