(i) link in this rule goes to 404 page

“Insert a space between the numerical value and the unit symbol.”

When you click the (i) info icon, the target link is a 404.

Thanks, I’ve removed it for now. It would be great if someone could suggest a good alternative.

Not sure what was there before, but here’s an “OK” site that does explain the space after unit rule:
https://physics.nist.gov/cuu/Units/checklist.html

We do have a team that works on units of measurement, I’ll have someone ask them if they have an authoritative source they are working from. Will not be a quick response.