Small Stirling Heat Engine Model, Can Start, Mini Metal Assembled Toy, Physics Experiment UV400 Storage Humidity: 0% to 90%

Storage Humidity: 0% to 90%

Material: Lightweight

This unisex heavy blend hooded sweatshirt is relaxation itself

Operating Temperature: -10 C to 40 C (14 F to 104 F)

press and hold to start

Small Stirling Heat Engine Model, Can Start, Mini Metal Assembled Toy, Physics Experiment UV400 Storage Humidity: 0% to 90%How to use: 1. Turn the flywheel by hand to see if it is smooth, and if it is not smooth, adjust the relevant screws (it has been adjusted before shipping). Second, check whether the sliding parts are clean. 3. Fill the alcohol lamp to less than two thirds. It should be noted that the best effect is to use alcohol with a medical purity of 95%. 4. Light the alcohol lamp and place it at the front of the test tube. After about 1 minute, turn the