Handcranked wave demonstrator designed for clear, handson teaching of wave motion Key benefits Demonstrates both longitudinal and transverse wave motion, making abstract concepts visible and easy to explain Manual handcrank operation produces consistent, repeatable waves for classroom demonstrations and lab exercises Sturdy polypropylene construction resists wear from regular educational use while remaining lightweight for transport Compact footprint provides good visibility during demonstrations yet stores easily when not in use Singleunit packaging supplies everything needed to begin demonstrations immediately Main features Function: Physics model that clearly shows the fundamentals of longitudinal and transverse waves using a handcranked mechanism Material: Durable PP (polypropylene) suitable for frequent handling in school or laboratory settings Size: 40.5 x 10 x 30 cm (15.94 x 3.94 x 11.81 inches) provides a balance of visibility and portability Package contents: 1 handcranked wave demonstrator included Measurement note: Please allow a small measurement tolerance of 12 cm due to manual measurement Practical applications Classroom demonstrations: Use during lectures to show wave propagation, compression and rarefaction, and transverse oscillations in a way students can see and discuss Laboratory exercises: Let small groups operate the demonstrator to observe wave speed, wavelength, and amplitude relationships during guided experiments Outreach and fairs: Portable and easy to operate at science fairs or outreach events to engage the public and illustrate basic wave behavior Why choose this model Clear visualization of key wave concepts supports student comprehension and retention Robust, easytouse design fits routine teaching environments without special setup Compact size and singlepiece packaging make it convenient for teachers and instructors to store and transport Package includes 1 pc Wave apparatus demo Note Slight size variations of 12 cm may occur due to manual measurement