Feature:1. EASY TO USE: Slide rheostat is easy to use, simple structure, no complicated operation, suitable for teaching physics and electricity.2. CONSTANT VARIABLE VALUE RESISTORS: Sliding rheostat supports the dual use of fixed value and variable value resistors to meet different circuit analysis needs.3. SUPERIOR WORKMANSHIP: Physics electrical slide rheostat is made of alloy and copper, exquisite workmanship, long time use.4. SAFE AND RELIABLE: Adjustable sliding rheostat is designed with sliding head and insulated wiring cap, safe and reliable to use.5. TEACHING AIDS: Adjustable slide rheostat is the best learning present for students, it can be used as a teaching tool, laboratory use.Specification:Item Type: Sliding RheostatMaterial: Alloy, CopperApplicable Scenes: Physics Electricity Teaching, Circuit Analysis.Package List:1 xSliding Rheostat