Jules provided the link to the camera calibration. Here is a link to how to make a jig. Video Tutorial - How to make a jig
Since your material is so tall, your “jig” is probably going to be an outline you make on the floor of your Glowforge with tape or a sheet of paper that insures that your material placement is precise and repeatable. In your artwork, you make an outline cut of your material and align the artwork perfectly within the outline. You then place your material within the cut outline, ignore the cut process and engrave your artwork.
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