I trust Wally's judgment, even when he makes a lot of typos, lol. That was my initial reaction, after all.
Soooo... since it's bought and paid for, and the OP has a multimeter, I'll go back to my initial advice and say it should be scraped sooner rather than later.
yeah, my I Pad Air likes to automatically and randomly opt to use the numerical board rather than the letters!! I should reread before posting.
i am one who does not thin’ that a multimeter doth a tech make. Ommv….