The Earth, Moon, and Mars, to scale, with 3D surface terrain and full color from the latest NASA space imaging.
[See also the solar system set
(but note that set is a logrithmic scale, not linear like this one)]
Earth: 50mm (2 inches) diameter
Mars: 27mm (1 inches) diameter
Moon: 13mm (0.54 inches) diameter
Scale: 1 : 251102362
The Earth and Mars globes are hollow, with a 12mm (1/2 inch) hole at the south pole, giving them a flat bottom on which to sit without rolling, but each also comes with a matching cap/plug to seal that hole, to form a full sphere. (The moon is solid)
Special thanks to NASA / JPL-Caltech, for allowing the use of their planet surface terrain and mapping.