Features: Experience precisely control over electrical resistance with our Adjustable Magnetic Sliding Rheostat, essential tool for enhancing your understanding of current variations in circuit experiment. Crafted with abs and metal, this 2A 20Ω Magnetic Sliding Resistor features sliding designs and clearly calibration, ensuring ease of use and reliability during experiment. Very suitable for school student, physics teachers, science enthusiasts, as well as electricians and electronics enthusiasts who seeks hands on learning tool. Widely used for physics laboratories, electrical course teaching demonstrations, and circuit project development and testing environment. Enhancing your educational toolkit with this physics teaching aid, designed to facilitate interactive learning and foster deeper comprehension of electrical concept. Specifications: Color: Green Component: ABS; Metal Size: Approx. 23.5x10.50cm/9.25x4.13in Weight: Approx. 210g Package Includes: 1Piece Magnetic Sliding Rheostat note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color