Parallel edge marking tool - One handed

Tool to create parallel lines to a board edge at 1/8" increments up to an inch.Wanted a one handed solution to draw a parallel line to the edge of a board to mark the screw locations when screwing 2 pieces of wood together at 90 degree angles.For 2 pieces of ¾ thick wood, use the 3/8 mark.10/3/24 - I changed the download to a v2.0 version which angles the side making it not flip as easy.11/4/25 - Added print profile as people printing on other than an X1C were experiencing problems with text not showing up, new print profile should now work on all printers.