Complete and functional. This Art Deco style visible gas flow meter records in imperial gallons and was used on oil trucks in the 1950's. Model "Master Meter Duplicator" made by A.O. Smith Corp. Meter Division in Los Angeles California. Main operating crank rotates well and reset knob allows to reset all numbers to 0. There is a slot to insert and punch receipts. Dial was cleaned and a new plastic cover will be installed. Meter measures 9x9x7 inches and weighs 25 pounds.