As far as I can tell the nudge distance is set depending on the units you set in the inspector as follows:
Units: pts, nudge distance: 1pt
Units: in, nudge distance: 0.014in (which is exactly 1pt)
Units: cm, nudge distance: 1mm (which is slightly more than 1pt)
I don't believe you can alter these settings in FM.
Thank you that was what I was looking for. I had it always on cm and no with pt it is smaller like I wanted thanks, have a great day.
For what it's worth, I always set units to points as you only have to deal in whole numbers—so much easier.
Thanks very much that is a great input, which I can use very well.