Your new Model T came from the factory with no fuel gauge. You could buy a mechanical gauge from one of the several companies that made aftermarket accessories for Model T Fords, but most folks just used one of the sticks that were given away by the millions as advertising by Ford dealerships. Today sticks are sold by Model T parts dealers, and some are still given away as advertising. Some of today's sticks are marked for use with all four of the tanks used between 1913 and 1927, and some are marked for three tanks. If you want to make your own fuel gauge stick, here are the measurements you can use to mark it.