Oh, I just realized that that's actually only the pickup dimensions. The covers are slightly bigger. Measurements:
9cm, 2mm (width)x 4cm 2mm (length). I can't be bothered to pull them out to measure the depth, but they're only slightly taller than the pickup itself. There're also semicircles on the cover where the screws are placed. It looks like at the peak of the semi-circles, the length extends to 5cm 2mm, and the four semi-circles (at the middle of the semi-circle) are all 2.5cm inside from the outer edges of the cover and there's a 3cm gap between the two semi-circles on the same side (going from edge to edge, not center to center). Each semi-circle is 1cm 2mm from edge to edge.
I didn't really lay that out very well, hopefully you'll be able to combine it with a picture of one of the covers to get some idea of how the measurements coorespond.
Also, the measurements seem to be cleaner in inches. I'm too lazy to remeasure/convert, though.
