Thank you for the info. I have looked at The etchomatic as but was unsure if it worked better than "jury rigged" set-up. I am not on instagram but my wife maybe. I will try it out.You likely won't find scales like this on a website or anything. These are custom made by a buddy. If you're not on Instagram, do so. You'll find everything you need there through all the different people who make very custom stuff.
As far as a logo, all mine are laser marked. But I used to chemical etch (I.e. Etchomatic). I didnt find it to be consistent enough, but lots of makers use it everyday with great success.
Thanks again for the Info. I enjoy your work. It's motivational for a newbie. I am hand filing right now. Trying to justify a jump to a 2x72 ...... but better to learn the old slow way I guess.