Howdy. If you still have to redline stuff, and don't want to use sketch measure, these symbols I've been using may come in handy. The labels expand automatically. Its pretty hacky, but it works. Contains both area measurement and width/height measurement.
Let me know if you find it useful!
(Inspired by Thomas Lowry's Figma implementation https://twitter.com/negativespaceca/status/978766996857901057)
L or F like