I cut out targets for the mirror holders from watercolor paper. Make for a relatively stiff stock, cheap and easy to use and a rather wide range of power can be easily seen.
I got away from tape… way too messy…
I cut out targets for the mirror holders from watercolor paper. Make for a relatively stiff stock, cheap and easy to use and a rather wide range of power can be easily seen.
I got away from tape… way too messy…