I have a#l Viking. The needle adjusts left and right.
I use the quarter inch foot that goes with my machine.
I change the needle position to the far right then move
it to 4.0. When cutting I line the ruler mark to the edge
of the fabric...not on the edge...if that makes sense.
You will wind up with a perfect scant quarter inch seam
every time.
Brenda from Wadesville In