Golden ratio calipers


It was either @jkopel or @henryhbk I think who made them. Don’t think they used the same name for them though.

I downloaded the files at the time but would have to dig around to find them.

There are these but they are not the same thing.

Edit: well crap, now I’m going to have to make some even parts dividers to go with the golden ration set.


Very cool looking calipers! (slightly “War of the Worlds”.) :sunglasses::+1:

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Memory isn’t what it used to be :blush:

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Right there with you bro.

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Nice calipers, and some even part dividers would be pretty good too!

“First I put the PDF into Inkscape, did some tracing”, I hope you used Trace Bitmap in Inkscape. Nice Project!

Oh, I wish! I don’t know what was with that PDF, wouldn’t even open in Fusion 360, wouldn’t trace in Inkscape. Had to literally trace it out using the bezier tool then I put that relatively poor SVG into Fusion where I could clean things up nicely, then back to Inkscape for color codeing .

That was an epic topic. It is what got me hooked on Onshape. I made a chipboard copy of it, but never got around to the acrylic one.


Interesting to hear others workflow. Thanks

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To be fair, I usually start in Fusion 360 but this particular project forced me to go back and forth.

I’ve been doing, Photoshop: export to SVG, then Inkscape with good results, for me anyway.

Wondering if this was your inspiration? The laser cutter sure makes it easy.


Yes, exactly, I mentioned it in the free plans post but failed to here.

Well after you have the file worked up! That is why I shared my iteration; not everyone should have to spend hours perfecting the file. Spend that time perfecting something else and share it.


Thanks for sharing!


Oh, I like what you have done with it!



I’m just wondering if you ever checked these for accuracy because after I printed them exactly from your file, assembled with the correct size chicago screws, and they seem to be off by quite a bit: Measurement AB=4" BC=5.75" AC=9.75". That does not sound right to me.

I had not, but I got curious and checked. Yeah, they come in a little short consistently.
The actual ratio should be about 1.62, these are doing about 1.4-1.5.

Even though these are just for a SWAG* it is good to know this. Thanx.

If you need spot-on, I’d suggest, like any calipers, getting a good set that will run you $70-80.

*scientific wild ass guess

I made my own, and added to your thread: Golden ratio calipers the plans

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