Here are a couple of ideas:
1. You could use a type of alarm that utilizes a wristband like: http://www.smarthome.com/3220B.html >P> 2. There are several floating alarms that detect wave motion caused when someone falls in.
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Rub my metal balls or rubber balls.
metal screws
metal is a conductor and rubber is an insulator
yes, you can buy metal rubber at your local wal-mart
Yes it is. Rubber can be bend wherelse the metal cannot!
Confirmat Screws
metal....N.A metal....N.A
why are metal prongs of a plug sealed in plastic and rubber
Probably just plastic + a few metal screws or something. the dart are made of foam, usually with a rubber tip
rubber
it shouldn't hurt it any. the filter on the oil pickup will keep it from being sucked into the engine.
how far apart should screws be placed ina metal roof