The math spring scales tubular that are perfect for use in the science or math classroom. It offers accuracy, durability and readability at an . It has graduated in grams and . Provides ranges and accuracies that are suitable for student laboratory applications. Features - Color: Yellow - Material: Plastic. - Size: 25.00 x 2.50 x 2.50cm/ 9.82 x 0.98 x 0.98 inch. - material to ensure and controllable stress and deformation in a large range of working environment. - Long times measurement, high-precision reading table, to ensure accurate reading. - High precision spring ten thousand times error controllable and . - quality and finish, dual transparent scale measures in and grams. - User friendly zero-point calibration capability. Great for physics demonstrations and experiments. Package list: 4 x spring scales