I make my own pantograph's too from a continuous line book I purchased. I copy the pattern onto
clear acetate. Then line them up to the right length of my quilt- a friend gave me long pieces of accetate
from her school- they were used for overhead projectors.
I have a mirror under my machine so I can see the stitching and with the acetate it doesn't block
my view of my work . It would be another story if I had a paper pattern it would obscure the stitching