It's really great because it can be used on house plans, lot plans and even Rand McNally maps. If I wanted to improve it, I would (1) make the wheel pressure adjustable for different surfaces. To do this, you need a perfectly flat, smooth surface and paper. Scale creases, (2) add light so I can see the lines more clearly when it's on the surface I'm measuring, and (3) give better directions. It took me quite a while to set my own standards. I tried at least a dozen times over the course of 30 minutes before it finally worked. I'm not an engineer or IT professional, but I think the instructions are written for people with those skills. But like I said, I finally got it.
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