My hubby and I needed a gas regulator for our gas stove at that time when we moved in to our new house as a newly wed. We then bought one of the older models, and it was without the gas meter. Since the gas supplier here sometimes cheats, we wouldn’t know whether the gas was fully charged or not. Our old gas regulator couldn’t tell us the gas volume. So after a while we decided to buy another with a gas meter this time. This gas regulator we bought is made by Winn Gas, a quite well-known brand for gas regulators (they also produce gas stove recently). The model of our new regulator is T-688. Our old gas regulator was also made by this brand and our experience tells that this brand has been doing a great job. Our new gas regulator is dark blue-colored and the gas meter has been a great additional tool for measuring the gas volume. The gas indicator is the colored curved lines on the gas meter: red for danger (the gas maybe too full), green for full, and black for empty. Most of the time when we buy the gas it indicates the half way to full (green line). Sometimes we found it on the black line, so it indicated it was empty, or almost empty. On this case we would complain to the gas supplier. So far, we’ve been satisfied with this gas regulator, and we plan to use it as far as it could go.