This thing is watertight and encased in a thick cast aluminum housing - but its accuracy (or lack thereof) is appalling.
You can get one of these and a host of other goodies here at Cafe Press .
Lulu is a Southern States Rescued Rottweilers girl.
Thank you Janice for making this ceramic piece for me back in the early 1970s. I still have the pair and treasure them as I did the day you gave them to me.
As you can see, Faith helped me set up the photo.