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Tool to get dimensions from a line drawing

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Recently I was using some line drawing to try to create a 3D model with openSCAD. The drawing has some dimensions marked on it but many are not. So I created this simply and crude tool which will allow measurements to be taken on a line drawing.


Basically you upload an image, usually a line drawing. Mark a known distance and input the value of that distance. Then you can mark any other distance on the image and find its dimension.


A demo is running on github's gh-pages. Check it out,




If you're interested the full code is here,





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