I am to print the iPhone dock from Scott Yu-Yan and Overwerk. To make my iPhone fit with my case I was looking for a way to measure the corner. Et voila. Thank you for your tremendous work.
Moire Vernier Radius Gauge
This is a radius gauge that uses a moire effect to allow you to directly read the result of a vernier scale.
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August 24, 2025
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Brilliant! This is a novel implementation of a vernier that takes the guesswork out of interpreting. Instead of having to scrutinize the vernier for the closest line match, this implementation shows it to you. Very nice! The designer sells himself short when he says it's accurate to +- 1 mm. I printed mine on my Prusa MK3.5. It's acurate to +- 0.5 mm. Great work! Something to be proud of.
Printed the indicator from here and the chamfered outer piece by Bazzalight. Love this thing, it's accurate and super easy to use. Printed on the Snapmaker U1 with the filament that came with it. Thought the text was going to be too thin to work reliably but it turned out okay!
Thank you very much for the great design. The measurement accuracy is much better than expected. Very helpful!
The thumb slide is coming soon ;-)
I would like to thank you very much for the model.
I'm glad to hear it worked well with the MMU. I just did the single extruder multi material thing. I assumed it would be MMU compatible, but it's great to have it confirmed.
Printed in generic PLA and looks great. Testing against objects with known radii and it looks to be accurate within ~0.2mm which is good enough for little design projects.
Thanks!
Looks great! I need to fix the orientation of that thumb piece--I forgot to flip that, and having the lower surface as a contact point for the thumb isn't ideal.
Are you reading sub-millimeter by interpolating based on how much of the bar is showing in each window? I've just been treating it as +-1mm, but I suppose there could be more accuracy to be had there.
@emertonom_270029 I was roughly gauging accuracy by measuring objects of known radius and eyeing what the difference is. (testing old machinist tools)
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Intelligent and thoughtful design for FDM printing. Thank you! I lasered the markings on and found it to have an error of +/- 0.5mm which is pretty awesome for a 3D printed tool.
@Kizzard_442457 What kind of laser did you use? Wavelength?
@Vipergo_1128094 it's a xtool f1 with a 1064 nm IR laser. For plastics it works good for black but not a lot else unfortunately.
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