How to use the wine holder

So just how do you display your bottle of wine , spirits or olive oil?

Step 1. Hold the wine holder and place the bottle into the hole

 Step 2. Once the bottle is in....let go. It balances itself

 Step 3. How far you put it in determines the balance angle. Remove bottle from holder to pour your wine. Then replace lid, put back into the holder.......it will always balance - even when empty !

click here to see the physics involved  http://www.ucke.de/christian/physik/ftp/lectures/Household_objects_and_centre_of_mass.pdf