ROUASD Mini Full Copper Steam Engine Model Kit with Boiler – Educational Mechanical Model Desktop Display Collectible Physics Experiment for Adults (11.3 x 4.5 x 10CM)

ROUASD Mini Full Copper Steam Engine Model Kit with Boiler – Educational Mechanical Model Desktop Display Collectible Physics Experiment for Adults (11.3 x 4.5 x 10CM)

• ?【Handheld Vintage Steam Power】A stunning mini steam engine set measuring 11.3 x 4.5 x 10 cm—crafted from pure copper with a lustrous finish. Palm-sized yet fully functional, it’s ideal for learning and display.
• ?️【High-Quality Craftsmanship】Includes a 29mm brass flywheel, 4mm output shaft, and delicate mechanical structure. The all-metal build ensures durability, fine detail, and elegant mechanical motion.
• ?【Functional Boiler with Safety Valve】Built-in 12ml boiler runs for approx. 10 minutes. Fueled by solid alcohol and equipped with a brass safety valve, it delivers safe, authentic miniature steam propulsion.
• ?【Educational & Collectible Value】Demonstrates core principles of thermodynamics and mechanical motion—perfect for students, teachers, or model enthusiasts who want to explore steam science up close.
• ?【Great Gift for Steam Fans】Packaged in a premium box, this set makes an excellent gift for tinkerers, engineers, hobbyists, and steampunk lovers aged 15+. A true conversation starter and collectible keepsake.