Hello Larry, just take a fine point permanent marker, a millimeter scale and mark your own scale on the card. To make it look pro, first mark 3-horizontal guide lines with a pencil. Use the outer lines for the centimeter mark and the top + center lines for the millimeter mark. And presto you have what you need for your macro work. Regards. Bipin. camp:Thornhill, Ontario, Canada & not from the far away enchanting land.
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