black business flowing glass grey groningen hour hourglass illustration measure object sand silhouette time time-saving vector white antique appearance bowsers components design dry early flow measurement fuel dispenser fuel pump gas pump gasoline pump historic machine measuring metering pump non-functioning old parts petrol bowser petrol pump petroliana pricing pump relic unusable unworkable bowser flow-measurement fuel-dispenser fuel-pump gas-pump gasoline-pump metering-pump nozzle petrol-bowser petrol-pump