Micro Stirling Steam Generator Engine Moon Lamp Voltage tester

Voltage tester

Self-balancing gyroscope anti-gravity decompression educational toy finger gyroscope

all can be printed

Complimentary USB charger: Intelligent aircraft

Micro Stirling Steam Generator Engine Moon Lamp Voltage testerHow to use: Turn the flywheel by hand to see if it is smooth, and adjust the related screws not smoothly Check whether each sliding part is clean; Fill the alcohol lamp below two thirds; Ignite the alcohol lamp and put it on the front of the test tube. After about 1 minute, turn the flywheel and the engine rotates. The warm up time with the generator is slightly longer. Cautions: Do not touch the test tube and the metal connected to it to avoid burns.