◇Measurement range： 300 hPa～1200 hPa ◇Pressure accuracy class：Class 0.01（±0.01%F.S）◇Pressure control stability：0.002%F.S（±0.02hPa）
YKQ-20-B Standard Portable Automatic Pressure Generator
YKQ-20-6 full-automatic piston pressure gauge
QYJD-2B empty regions air pressure verification device
