Based on our frequent camping trips to other European countries for several weeks, I wanted a reliable indicator instrument on the filling state of my gas cylinders. The GL 3001 disappointed me in every aspect. both filled as empty 11 kg cylinders have always been displayed as empty. Moving to the meter on the bottle showed it this time red green on. Even on non zerkrazten or paint moderately smooth surfaces was not a reasonable result to achieve. Have pulled back down on a bathroom scale and abezogen the curb weight from the current weight. An excellent method of measurement.
