On Feb 19, 6:38 am, "JoeM" wrote:
have a long uphill driveway(200'+) and need a way to tell when the mail has been delivered to cut down on trips to an empty box.


About a million years ago (actually it was in the 1970's) my friend's
father invented and patented a device that would drop down when the
postman opened the door on the mail box.

So all one had to do was look and see if the ball had dropped to know
if the mailman had been there.

K-Mart was selling those for a while.

I don't know if they are still out there or not.