Made with Xara Meter Calibration How Much Fuel are You Giving Away? The use of our provers gets your site up and running in half the time it takes using the manual method and ensures the accuracy of your pump meters, so you do not distribute more fuel than your customers pay for. Inaccurate meters can cause thousands of dollars of lost profit each year, even when the meters are within nationally accepted tolerance. • If you have a meter off by just one cubic inch per 5 gallons, you give away almost one gallon (0.8658) per one thousand gallons pumped. • If you pump 50,000 gallons per month, through out-of-calibration meters, you give away 43.29 gallons every month! • A meter that is off by 3 cubic inches, which is the allowable tolerance in most states, gives away almost 130 gallons per 50,000 gallons dispensed. The prover trailer allows testing the calibration of three different grades of gasoline at once without cross- contamination. Three 115-gallon holding tanks allow our technicians to conduct: • 69 gasoline test runs with the five gallon measures • 7 test runs with the 50 gallon prover • 4 diesel test runs with the 100 gallon prover ....before returning the fuel to the storage tanks.