Here's an interesting find ( I thought ) that I made in my backyard awhile back. My first sprinkler. It might not be valuable but it was fun to find. Believe it or not it was a challenge to find because it was backed right up against a reinforced concrete slab about 2" down. The interference from the steel in the concrete was bad but I THOUGHT I could hear something different going on with the signal at a particular spot but it was intermittent. After determining the suspect spot I pulled this out, like I said, literally pushed up against the slab at 2" down. It made me smile. It's well made and very heavy for its size, approx. 6-8 oz. It measures about 3"x3". On the back is written MADE IN USA, L.A. NO. 70 CAL., PAT. NO. 1044348 (not sure of a couple #'s), 25 FT. DIA., MED. PRESSURE. Like I said, not worth anything but I love old stuff like this....and it works like a champ ! I haven't determined the age but my guess is 1960's at the newest and possibly considerably older. If anyone knows, let me know. Gonna be warm here today. Wish I was still a kid then I'd turn it on and go run through it.
HH
Scott
HH
Scott