[Dr. Sivana]

Though, why would an adjustable wrench want to self-identify as a fixed spanner?

That one's easy: skeuomorphism, the same reason why a floppy diskette icon is the on-screen toolbar symbol for saving a file to SSD, hard disk or a server.

How is it that a wrench would just be left lying around on a spaceship

If I were Roddenberry, I would claim that the wrench had a self-activating gravitational field that turns off whenever a human hand picks it up. Even in its larger size, the wrench doesn't look useful for adjusting or repairing any of the fixtures in that particular room. Handy thing about the 23rd century, you can posit almsot anything ... even more if you assume the Star Trek universe is not ours.

Man in the High Castle (Amazon series) had small color TVs getting clear reception in the otherwise dilapidated neutral zone in remote Colorado. Some posters on IMDB and Amazon point out historical "errors". Since this is an alternate universe from the get-go, that's a nearly impossible point to prove, especially since these Nazis already are sending spaceships out well-into the solar system in the early sixties. Despite that, the series has lots of love for open reel tape.

[USFRIENDINVICTORIA]

I can’t dispute those points.

I follow (actually binge watch) TMITHC too. It’s hard to get used to the idea that WE live in an alternate universe from the characters in the story.