Product overview This is a balance style Stirling engine model made predominantly from metal for quiet, stable operation and long lasting durability. The heating cylinder uses custom thick glass for extended heating without pressure, and the base is a brushed aluminum alloy plate for a refined appearance. Key benefits Reliable and quiet operation: metal construction reduces vibration and noise for smooth performance. Durable and corrosion resistant: quality metal parts withstand repeated use. Stable heat handling: thick glass heating cylinder tolerates prolonged heating periods. Easy to operate: simple ignition and a gentle push get the flywheel running within seconds. Educational and engaging: ideal for demonstrating thermodynamic motion and mechanical principles. How to operate 1. Fill the burning container to 95 percent. 2. Light the fuel and allow the roundedended glass cylinder to heat for about 60 to 120 seconds. 3. Give the flywheel a gentle push and the engine will begin to run. Specifications Color: Gold Material: Metal Size: Approx. 16.5 x 9.5 x 13 cm (6.5 x 3.74 x 5.12 in) Weight: Approx. 730 g Typical uses and applications Classroom demonstrations: Show principles of heat engines and thermodynamics during physics lessons. Science projects and fairs: A handson model for experiments and student presentations. Home display and exploration: Use for study, demonstration, or as an educational gift. Package contents 1 Piece Stirling Engine Model Notes Please allow 0 to 1 cm variation due to manual measurement. Color may vary slightly from images because of different monitor displays.