... quality,OEM 4.Accuracy:normally grade 1.6 or 2.5 Pressure gauge suitable for measuring the pressure of liquid, steam and gas ... ~0.25 , 0~0.4 , 0~0.6 , 0~1.00 , 0~1.60~2.5 , 0~4.00 , 0~6.00 ... ~60,-0.1~0 , -0.1~0.15 , -0.1~0.3 -0.1~0.5, -0.1~0.9 ,-0.1~1.5 , -0.1~2.42 ... ordering) copper casting and stainless steel4.Internal filling damping liquid (1) glycerin (2) silicone oil (filling according to user's ...