It's a beautiful marking gauge that you made. Just so that you're aware, Instructables is running a Wood Contest right now where you can share skills as well as projects. If you combined your work to show not only how you made the marking gauge, but, how one uses a marking gauge, you'd have one heck of an entry for the judges prize which focuses specifically woodworking skills and techniques rather than the built project itself.
And while I'd love to see a "step by step" the "slideshow" is acceptable. I can look at these pictures and get the basic gist of how to make one of these.
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Nice work anyhow!