dimensions and diagrams needed for atx motherboards

I need to know how far apart the screw holes are on the various sized atx motherboards (full, micro, flex).
Can anyone tell me where to download a few diagrams with dimensions and measurements?? thanks
rich

You might try here. You could view some and print the ones you want.

thanks but couldn't find the measurements

Most cases have the holes pre drilled for the standoffs and mark which holes belong to which type of motherboard... you could measure them from there?