MANOMETER; PRESSURE RANGE: 0 PSI - 100 PSI; THREAD DIAMETER: 1/4 IN; BOX DIAMETER: 2-1/2 IN; CONNECTION TYPE: NPT; INDICATOR, GAUGE, LIQUID FILLED, LOWER MOUNT, SMALLEST GRADUATION 2 PSI, ACCURACY /- 3-2-3 PCT, CASE 304 STAINLESS STEEL; MODEL : 70670310