Specifications include, but are not limited to: ONE 25 US gallon enclosed LPG Prover able to deliver at 60°F and 100-PSI Built in accordance with NIST and ASME standards and registered with ANSI as applies Calibrated by a NIST traceable lab and includes all corrections tables MATERIAL: Stainless Steel Must include proper ASME data plate including registration number (s), stamp (s), MDMT, and MAWP Manufacture data plate must include: Manufacture name and address, material ID and thickness, serial number, thermal expansion, drain time after MLC, and volume Upper neck plate must include: Temperature and pressure for calibrated volume, explanation of graduations, serial number, volume, and 25USG scale information Lower neck plate must include: “0” indication, precision level indication, 4 levels indicating within 0.5° when set, 1-1/4” ball valves for filling and draining, 1-1/4” ball valves for vapor flow from prover to vapor return hose reel Additional Items: 4-1/2" Analog pressure gauge up to 300 PSI Non-adjustable stainless-steel bolt down legs Required pressure relief valves calibrated at 250 PSI 3 Emergency failure valves Fuel resistant paint NTEP approved thermometer for the thermo well