Ask HN: Does there exist any open online calibration outside of software?

I find it hard to think of any open calibration online that creates things other than software. I only give Wikipedia 95% since I think it’s collating not creating, but welcome similar answers. I think most exchange.com’s outside of the realm of software are just not working. I think community’s like Reddit and HN are fluid, You just can't go to a group and find an answer, it's not a grabable object of value. Their existence however has great value but was done by a small closed team. Thoughts?