Merit's PTRB Series Pressure Gauge is designed for non-corrosive applications and environments where durability, accuracy and value are desired. This gauge comes standard with a 4" dial aluminum case, polished brass ring, glass lens, brass internals, 1% full scale accuracy and 1/4" NPT bottom connection. Available in psi only, psi/kPa and psi/Bar ranges from Vacuum through 600 psi. Other ranges, connections and dial sizes are available upon request.