I have a small maglite, so I use the blades of the easel as a ruler. I slide the maglite along the blades not forgetting to push them up a little to allow the light to spread unregularly. Be prepared to waste a few sheets of paper before you get the knack.
I have a small maglite, so I use the blades of the easel as a ruler. I slide the maglite along the blades not forgetting to push them up a little to allow the light to spread unregularly. Be prepared to waste a few sheets of paper before you get the knack.