Help measurement confusion

[Shieldwolf]

in sf configuration what is the measurement of the diamter of one button to the next both horizontially and vertically. I read another post that said 1 and 5/8 but I was sure if that meant from diameter of the button or not

[BobA]

I am not sure where the 1 5/8 measurement comes from but the buttons are 1 7/16 to 1 1/2 center to centre when looking down on them.  This is the minimum spacing which could be made to be 1 5/8 if you had a large hand.

BobA