Part Of The Experiment Show: Use voltmeter to measure voltage, use ammeter to measure current, slide rheostat to change bulb brightness, series and parallel circuits, magnetic levitation experiment, traffic light experiment. Specification: Product Name: Electrical Physics Laboratory Equipment Material: ABS high-quality plastic Battery: 3*AA batteries are required (not included) Include: Storage Box Ammeter Voltmeter Fixed Value Resistance Sliding Rheostat Diode Single Pole Single Throw Lamp Holder Single Pole Double Throw Battery Case Open Motor Electromagnet Compass Iron Powder Box Bottom Plate Suspension Stick Baffle Magnetic Car U-Shaped Magnet Bar Magnet Round Magnet Copper Sheet Zinc Flakes Small Bulbs Wire Screwdriver LED Lamp Beads English Manual Notes: 1. Due to the problem of the display and manual measurement, the product may have small color difference and error, please refer to the actual product. Hope you can understand. 2. Thank you for choosing us. All products are shipped after strict inspection. If you receive the goods and have any questions, please contact us, we will give you a satisfactory solution within 24 hours.