Handcranked wave demonstrator designed for teaching and demonstrating wave motion in a clear and engaging way. This physics model illustrates both longitudinal and transverse wave behavior, allowing students to see the fundamental properties of waves in real time. Key benefits Clear visualization of wave motion: Demonstrates both longitudinal and transverse waves so learners can observe propagation, compression, rarefaction, and transverse displacement. Manual speed control: Hand crank lets instructors adjust wave speed and frequency during demonstrations for stepbystep exploration. Durable construction: Made from sturdy polypropylene PP to withstand regular classroom or laboratory use without losing functionality. Portable and easy to store: Compact dimensions make the unit simple to transport between classrooms and store when not in use. Ready to use: Singlepiece unit arrives complete for immediate demonstration. Function and compatibility Intended for classroom demonstrations, physics labs, teacher training, and student experiments. Shows fundamentals of wave motion suitable for secondary and introductory tertiary physics courses. Specifications Model type: Handcranked wave demonstrator for longitudinal and transverse waves Material: Sturdy polypropylene PP Dimensions: 40.5 x 10 x 30 cm (15.94 x 3.94 x 11.81 inches) Package includes: 1 piece handcranked wave demonstrator Practical use scenarios Classroom demonstration: Instructor uses the hand crank to vary wave speed while explaining wavelength, amplitude, and wave propagation to a class. Laboratory experiment: Students measure and record wave properties as the demonstrator produces repeatable longitudinal and transverse motions. Science fair or outreach: Portable display for small group demonstrations that clearly show how different wave types behave. Note Please allow slight measurement differences of 1 to 2 cm or 0.39 to 0.79 inch due to manual measurement.