... .Accuracy:normally grade 1.6 or 2.5 Pressure gauge suitable for measuring the pressure of liquid, steam and gas which are ... , -0.1~2.42.Instrument nominal diameter: 40, 50, 60, 100,1503.Instrument shell material 08F (chrome) (plastic spraying, color indicated ... or equal to + - 30%.(4) instrument must be installed vertically. pressure gauge