Oblivion Units

Oblivion uses a coordinate system with units which, like in Morrowind, are 21.3 'units' to a foot, or 7 units to 10 centimeters (or to put it another way 64 units per yard [~70 units per metre]).

The base of this system is an exterior cell which is 4096 x 4096 units or 192 x 192 feet or 58.5 x 58.5 meters.

Another way of approximation is that any race at height 1.0 will be 128 'units' tall, and we assume that the average height of the people of Tamriel is 6 feet. 128 divided by 6 is 21+(1/3) (twenty-one and a third). Round this down, and 21 units per foot gives an average height of about 6' 1.14". This seems to be a reasonable approximation.

When importing height values for terrain into TESCS, 1 person height is only 64 units. Which equates to a smidge under 35 units per metre (32 units per yard). Also, the game seems to round height values down to the nearest 4 units, so this gives a vertical resolution of 5.7cm (2.25 inches). But when you load your terrain into the game, it seems to scale the height by 2 so that 64 vertical units equals 1 yard again! Confused? I certainly have been for the past couple of hours!

Incidentally, the default water level is at 4096 units, which gets translated to 0 in the Z-axis in-game.

File:ScaleGridQuad.jpg

Here is a map of quad locations in CS editor. From the WorldBuilding_101 tutorial.