Thumbtack cover, as you can see here, is used by placing a thumbtack on the Schmidt Net (Equal area net), and there is a possibility of pricking our fingers when using it. This Thumbtack cover eliminates this concern. If you've enjoyed my work and would like to buy me a coffee to support my creative efforts, you can do so through the link below. Your generosity is greatly appreciated! Buy Me a Coffee: https://www.buymeacoffee.com/ahmetutkuozkan