I've got a mercury one from donkeys years ago and it's spot on. Let's face it, it's all there was once.
I remember breaking one on the hospital ward and was ages chasing the little balls of mercury. I had to also put some money in the box in sister's office towards breakages. 
Gransnet forums
Health
Join the conversation
Registering is free, easy, and means you can join the discussion, watch threads and lots more.
Register now »Already registered? Log in with:
Gransnet »

