[USFRIENDINVICTORIA]

That's not an anachronism. Even if monkey (or adjustable) wrenches become obsolete in a couple hundred years, they wouldn't be anachronisms. Historical artifacts, maybe — but not anachronisms.

OTOH, a transporter beam in 2018 would be an anachronism. (Unless Elon Musk has one stashed in a secret lab.)

[Dr. Sivana]

A scuttle full of coal in a modern train in the fuel area would also be an anachronism. So would a horse and buggy on the interstate. Or a mace on a battlefield between 1st world countries. Anachronisms are something that doesn’t match the time in either direction, which is why the word is older than stories about time travel.