I place the ruler on the workpiece. I measure the length (6mm). I draw two lines.
Medium
Place the steel ruler against the workpiece. Draw a mark at 6 mm. Draw two lines from the selected corner. The drill hole is where the lines intersect.
Heavy
The drill hole is marked here. To do this, place the Plexiglas blank against the steel ruler and draw a short line at 6 mm. The hole is to be drilled later where the lines cross.
