A Classical Stirling Engine Model with a metal frame and a clear body lets you see exactly how each part works. The transparent design highlights the moving components for easy learning and demonstration. Key benefits Visual learning of the engine principle The clear body provides an intuitive view of how heat converts to motion, helping users understand the operating process without abstract theory. Easy and safe operation Simple to use: place the model on a cup or mug with hot water and gently nudge the wheel until it runs on its own. Flame design: no alcohol lamp required, increasing safety for home or classroom use. Ready to use: fully assembled, no assembly or installation needed. Durable, practical design Material: metal construction with a clear housing for durability and visibility. Built to withstand regular demonstrations and educational use while remaining compact for desks or displays. Important attributes Function: classical Stirling engine model that starts when heated and rotates to demonstrate propulsion principles. Compatibility: designed to sit on the rim of a cup or mug containing hot water; suitable for standard hot beverages used in demonstrations. Size: compact and deskfriendly for classroom, home, or office environments (exact dimensions not specified). Material: metal with a transparent housing for clear viewing. Performance: starts with gentle nudging and then runs automatically as heat drives the engine. Use scenarios Classroom demonstration: use during science lessons to illustrate heat transfer, mechanical motion, and basic engine concepts. Home STEM learning: a handson tool for kids and parents to explore physics together and reinforce concepts from school. Desk display: an engaging conversation piece for students, educators, or science enthusiasts that showcases a working model of an engine. Notes Fully assembled and ready to use out of the box. No need for installation or extra components beyond a cup of hot water.