BK12 Hole Spacing Dimensions On Top

I'm looking at the pdf's but cant seem to discover the spacing for the holes bolting through from the top. I can see the pitch is 46mm in one axis, but in the other i cant cleary work out what the sizes are, pitch, from which edge etc.

Thanks for any help offered.

If you have a look here : http://www.zappautomation.co.uk/pdf/...tor-mounts.pdf you can scroll through the info pdf and find the dimensions for the BK12

perfect, thanks webgoblin. The pdf i had wasnt as clear as this.