??? How many people do you think are still alive who know ANYTHING about a 2007 "RCA" (there was no RCA company in 2007, some Asian company owns the brand name and can put it on ANYTHING made by ANYBODY. What "home theater" has a laser in it? Do you mean a DVD (disc) player? You can probably get one FREE from somebody who doesn't want to throw away an early DVD player. Just get on Nextdoor or Craigs List and ask. "Anybody have an old DVD player they don't want any more?" They aren't worth anything since you get get a brand new Blu-ray disc player for less than $50. It's 2022. American cars use metric, almost everything uses metric. Spend $1 on a ruler with mm on one side and inches on the other. You really should have one. You can probably get one for 25 cents at a garage sale.