Protect
Your roof needs measurements done every year to make sure it will protect you properly.
If you think about it, your roof protects you from a lot of things! Rain, snow, bird poop. But if your roof's measurements are off it won't be able to protect you properly.
す, しゅ
まも, もり
None
If the measurements are off, and your roof doesn't protect you, then you get to sue (す)! If you're still alive, that is.
Odds are, the roof collapsed or a tree fell on you and you died from lack of protection. So now your family and friends are going to sue on your behalf.