Build a dimension chain and get worst-case and RSS (statistical) results side by side. Nothing leaves your browser.
Need accurate tolerance values instead of guessing? Look them up with the Drawing Extractor first.
Yes, completely, no limit. This is pure arithmetic that runs entirely in your browser, no AI, no backend call at all.
No, and it never reaches our server. The dimensions you enter are never sent anywhere, everything is calculated locally in your browser.
This is a quick design aid, not a substitute for your organization's formal tolerance analysis process. RSS assumes each dimension's variation is approximately normally distributed, verify that assumption holds before relying on the RSS result for a production decision.
Worst-case assumes every dimension is simultaneously at its most extreme value, the safest, most conservative answer, but often unrealistically tight for manufacturing. RSS (root-sum-square) assumes the individual tolerances are statistically independent and normally distributed, giving a narrower, more realistic range that's what most production lines actually design to.