The Baker AVNC-30HG dual scale pressure gauge measures -30-0 inHg / -100-0 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.