In a message dated 16/10/2007 10:19:58 GMT Daylight Time, gwinsk@xxxxxxx writes: Frank, I think it should be easy to use the lines from Bones' xml gauge for Weights, since that displays the two weights, to get to percentage. Alternatively, just press Shift Z and that, in addition to the other data, displays percentage fuel remaining, at the top of the screen. Gerry Winskill Gerry, Call me stupid but I'm trying to learn how to do it myself, without cribbing. You are probably right though! I know I can get it on screen but doing a gauge is more of a challenge. I can display the capacity and the current fuel ok, its just annoying that the RPN for the percentage arithmetic is NBG! Frank.