Water and power gauges / monitors

[Watty2975]

Hi All
Just wondering what people have in the way of water level monitors / gauges.

Looking to add one to our Campomatic. It has a 120L stainless tank.

Most gauges I have found seem to suit poly tanks.

Also looking at something to monitor battery voltage and power usage.

Appreciate any advice and pictures.

[D4D]

http://rvelectronics.com.au/index.php?route=product/product&path=20&product_id=50

[KingBilly]

http://www.mandrakessolar.com.au/controllers.html