Scale as seen from Earth, at a fixed magnification (i.e. through a very high powered telescope).
Actual body sizes (no perspective).
Sizes like a kids playset.
Body Data
Compiled from various sources:
http://www.universetoday.com/15462/how-far-are-the-planets-from-the-sun/
https://www.windows2universe.org/our_solar_system/moons_table.html
http://en.wikipedia.org/wiki/List_of_Solar_System_objects_by_size