Unreal Unit
UU stands for Unreal Units. Any number that represents a distance in Unreal is given in these units. There's also URU, Unreal Rotation Unit, but often UU is used for both length and angle.
See General Scale And Dimensions for comparisons with real units, player metrics etc.
Length
Angle
Note that some UnrealScript functions use radians.
| Value | Degrees | Steps per circle |
| 1024 | 5.625 | 64 (default step size of the rotation grid) |
| 2730 | 12 | 24 (not quite round, it's actually 2730.6666... ) |
| 8192 | 45 | 8 |
| 16384 | 90 | 4 |
| 24576 | 135 | |
| 32768 | 180 | 2 |
| 65536 | 360 | 1 - full circle |
To make the Rotation 270 you use -8192, NOT 40960. (Have had problems in UED 2) - Legal
See also the rotation grid in UnrealEd Advanced Options→Editor→RotationGrid, set:
