Could have been a great picture but the level of compression distracts from the composition. Try the free neat image tool to reduce the nasty artifacts. (www.neatimage.com)
Good use of lighting but the picture seems to have a lot of jpeg artifacts though. Perhaps you're using a low mp camera. I like the setup and I think the camera quality might take away from this. - 7
The focal plane seems to be at the middle of the left arm of he compass where nothing is happening. The colours are dull, and the composition is cropped weakly at the top. I like the geometric lines in the top right, but they are underplayed somewhat.