Center Scribe Measuring Tool
thingiverse
I made a block to be able to move the ruler by a thumb screw instead of 4 Flathead screws. I bought the tool from Amazon https://www.amazon.com/gp/product/B07RKJSZ6C/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 You need 4x M5x0.8 screws and 1x M8x1.25 Thumb screw. I will make a protection tip for the thumb screw later, but for now, putting a tape will be enough to avoid scratching the ruler. ** Update on May 12th I made the tip. I used a thumb screw I had and made a hole and glued the tip. If you don't mind to buy some hardware. <Nylon-Tip Set Screw> https://www.mcmaster.com/93285A136 You can print or buy a thumb knob for the set screw. https://www.mcmaster.com/thumb-knobs/system-of-measurement~metric/thread-size~m8/mount-type~threaded-hole/
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