Golden ratio calipers

For some unknown reason, I saw these and had to have a set. I downloaded a set of plans but they were raster PDF and would not load into Fusion so I have gotten a good workout with this. First I put the PDF into Inkscape, did some tracing, imported that svg into Fusion 360, cleaned things up a lot, tweaked the length of the center pointer then imported it back into Inkscape to color code! So even though this started with someone else’s plans I still had to earn this.

EDIT: link to plans for those who see this but not that:


Nice job. There’s a set or two here from someone back in the PRU days.

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I did a search but came up dry. If you have links it would be appreciated as I won’t post mine if the earlier ones are better than mine.

Nice, I like your design. I just happen to make a pair a week or so ago. They are not the greatest (pivot points too loose) so I would love to see other ideas.


I just posted these in the free plans area. This is why I always try to work in Fusion 360, I had to mess with the hole size myself but by using a parameter they all updated at once!



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.