I had a gage but it never quite registered accurately. Alas, if it had worked, it would have been about perfect. I would love to get two of the lite tanks but getting them refilled might be a problem. I looked up the places which were suggested as refillers and they are all across town. Argggh. Perhaps I could actually find someone on this side of town if I look a bit harder. Are they really simpler to get refilled than they would lead you to believe?