The moisture meter can quickly measure the moisture content of the grain. 1. Pure mechanical structure, when the gyroscope rotates, its base will shake a little. 2. High-quality zinc alloy material makes it wear-resistant and durable. 3. A great tool for relieving anxiety and stress that can make you feel relaxed. 4. The lightweight and compact shape is easy to carry and store and can be played anywhere, anytime. 5. A great toy for your children can also be a great gift for your friends. . METAL GYROSCOPE FOR PREZENT EDUCATIONAL Specification: Item Type: Gyroscope Material: zine alloy Color: as shown in the pictures Weight: approx. 188 g/6,6 oz . METAL GYROSCOPE FOR PREZENT EDUCATIONAL List of packages: 1 x Bracket 1 x gyroscope 1 x steel ring 1 x Rope 1 x lubricating oil 1 x Manual Note: . METAL GYROSCOPE FOR PREZENT EDUCATIONAL