Does anyone know the EXACT dimension between the bag-mount holes on the strut?

I'm trying to get my bag-mounting plate completely drilled and painted prior to taking the fender and lights apart. I'm still awaiting a part for my TS relocation but want to get ahead of the game so I can disassemble and reassemble in one quick process.

 

Don't have a tape measure?

 

Yeah, but when I hold it in my left hand, the numbers are upside down.

Actually, I need to install Cycle Visions Barebacks to the support plates I made. They'll work best if they are located perfectly and in tight-fit holes. As mentioned in the first post, I'm hoping to get the metalwork and paint done before disassembling the fender for TS relocation and bag-mount installation.