One of the most important aspects of purchasing a globe is determining the right size. Too small and it may get lost in your decor or not provide the level of information you would like.
Measure the area you plan to place your globe, especially when purchasing a floor globe, and refer to the assembled size on the product page.
The standard size for desk/table globes is around a 12-inch diameter and the standard floor globe is around a 16-inch diameter. These are typically good dimensions in most homes and offices.
If you are looking to decorate a lobby, library, or larger office or home space, you may want to look for a 20-inch diameter or larger.