True-Scale
AI models render jewellery far larger than real life. True-Scale lets you anchor one known dimension in an image, then measure any feature in true millimetres, annotate it, and export a spec sheet. It runs entirely in your browser and nothing is uploaded.
How it works
Anchor a known size
Set one reference dimension in the image, such as a ring's band width or a stone's diameter.
Measure any feature
Draw a line or box over any other feature and read its true size in millimetres, calculated from your anchor.
Describe the stones
Mark a measurement as a stone, pick the cut and the species, and get an estimated carat weight, the nearest standard size, and how its proportions sit against the classic band. A flat image cannot show depth, so the tool assumes it from published proportions and says so on every figure.
Export a spec sheet
Save an annotated spec sheet with every measurement, ready for a maker, a caster, or a quality check. Stones get their own report with the assumptions printed alongside.
Built for jewellers who are tired of AI renders that lie about size.
Want the full accurate-scale workflow guide?
The tool above is free to use right now, no email needed. This guide is optional: it walks through the full anchor-measure-verify method behind it.
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