At 11:44 AM 3/21/2002, G. Matthew Bulley wrote:
>JC Whipme and many RV/Propane places sell a thermo-sensative strip which
>can give you some idea of the fullness.  You adhere it to the end of
>your tank (the flat-ish part closer to the rear wheel) and when the urge
>strikes you to know how much propane you have, you warm up some water,
>and pour it over the strip.  The area above the "propane line" turns one
>color, the area below stays cool, and turns another color.

The metal of the ASME tanks is thick enough that you can't get a decent
dividing line -- the heat diffuses sideways as fast as through the
thickness.  Works great on my BBQ tank though...

david