Description: Material: Made from metal and pp materials, this sliding rheostat ensures long-last durability and reliable performance in various settings Product Size: With dimensions of 21cmx5cmx8cm, this 1.25A 200 ohm simulation device is compact enough to fit comfortably on any desk or workspace without taking up too much room LED Current Direction Display: Equipped with an LED display that clearly shows the direction of current flow, enhancing the learning experience by providing time feedback Versatile: This sliding variable resistor simulator is suitable for educational demonstrations, allowing users to easily understand and visualize the principles of variable resistance Package Includes: The sliding variable resistor simulator comes as a complete set, ready for immediate use in classrooms or personal study environments Specification: Material: PP, Metal   Size Chart: 21cmx5cmx8cm/8.27inchx1.97inchx3.15inch Package Includes: 1 Piece Sliding Variable Resistor Simulator Note: Please allow slightly errors due to manual measurement and different monitors.