And compared with fuel oil tankers in value, oil spouts calculate the fuel tankers error value.The system on the basis of the original method of fuel tankers prover, has carried on the elaborate design modification. spouts inside the magnetostrictive liquid level sensor set has two platinum resistance thermometer, its measuring range linear good, spouts resolution of up to 0.01% FS, high precision, excellent stability.To reform the standard gauge of metal structure, fuel dispenser spout make the standard metal gauge and the combination of the magnetostrictive fuel dispenser spout liquid level sensor stability effectively.