Gold ring lost whilst playing rounders

I had a call from Grace who had lost her precious gold ring whilst throwing a ball during a game of rounders with friends.
I met up with Grace, and by looking at photos that had been taken during the game , we managed to narrow down where the ring should be laying , and about 5 minutes later my Manticore detecter got a solid repeatable signal , and a very happy and relieved Grace was reunited with her extremely precious gold ring.