I have to do some under-the-house work sistering floor joists to correct a pretty serious sag. (any pointer to a place to get info. about that would be appreciated.)
A guy was telling me about a laser leveling system he got at Sam's Club for about $60 that came with two things to hang on opposing walls and would easily work for what I need to do.
Any recommendations? Brand names? I saw a single unit that put out lasers in 4 directions and vertically, but it was $200. Would something from Harbor Freight be good enough?
Thnaks in advance for any advice.