The Baker AVNC-600P dual scale pressure gauge measures 0-600 PSI / 0-4000 kPa. This pressure gauge features a 2.5" diameter dial, ±1.6% accuracy and bronze tube with brass socket. This gauge has a 1/4" male NPT bottom connection and is glycerine filled to minimize the effect of pulsations when taking readings. Please note you may receive a "REED" branded product. This is the exact same pressure gauge as shown in this listing.This product includes a calibration certficate traceable to NIST (National Institute of Standards and Technology).