Specifications include, but are not limited to: Quantity - 2 Size – 240 Gallons (3 – 80 Gallon Holding Tanks) Color – Stainless Steel Maximum or minimum dimensions – Fit 8’ or 6’ truck bed Quality - NIST Compliant New or used - New Maintenance, parts, supplies: 5 GALLON PROVER SPECIFICATIONS: CONSTRUCTION BUILT TO N.I.S.T. HANDBOOK 105-3 STANDARDS AND API MANUAL OF PETROLEUM MEASUREMENT STANDARDS CHAPTER 4 CALIBRATION FACTORY CERTIFIED USING STANDARDS TRACEABLE TO NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY NOMINAL CAPACITY 5 GALLON - CALIBRATED "TO DELIVER" AT 60 DEG F MATERIAL TYPE 304 STAINLESS STEEL DRAIN VALVE CENTER DRAIN, 2 INCH BUTTERFLY VALVE DESIGN REINFORCING BANDS TO PREVENT DISTORTION OF PROVER WHEN FULL WITH LIQUID AND WHEN BEING TRANSPORTED. LEVEL T TYPE LEVEL--ENABLES OPERATOR TO ENSURE PROVER IS LEVEL PRIOR TO TESTING. SCALE RESOLUTION 0.5 CUBIC INCHES REQUIRED SCALE RANGE ±15 CUBIC INCHES. THE GAUGE SCALE SHALL BE GRADUATED BOTH ABOVE AND BELOW THE NOMINAL CAPACITY GRADUATION BY AN AMOUNT NOT LESS THAN 1.5 % OF THE PROVER VOLUME VENT 1 INCH VENT LINE (SHOULD BE USED WITH 1 INCH VAPOR HOSE) EVAPORATION CONTROL CAP WITH CHAIN ON A SEALED NECK WITH FLAPPER AND BOOT TO PREVENT EVAPORATION AND RETAIN SATURATED AIR DURING THE DRAIN CYCLE