The precision of liquid column manometer was described. The correct use method and error correction of U tube manometer and double tube differential pressure gauge were analysed.
叙述了液柱式压力计的精度，对U形管压力计和双管差压计的正确使用方法及误差修正做了简要分析。
2
The Bourdon - type pressure gauge is more convenient for most purposes than a liquidmanometer.
在很多情况下，使用鲍敦式压力计要比液体压力计更为方便。
3
The presentation of usage of liquid column manometer. The correct use method and error correction of U tube manometer and double tube differential pressure gauge were analysed.