This data is the detailed cad of an automatic control instrument design General drawings, including: connection diagram of measuring liquid pressure pipeline, connection diagram of measuring steam pressure pipeline, installation diagram of thermal resistance on brick masonry, installation diagram of bimetal thermometer on steel pipe, installation diagram of pressure gauge with condenser pipe, connection diagram of differential pressure measuring boiler drum water level pipeline, installation diagram of pressure gauge, connection diagram of measuring gas pressure pipeline, etc., with accurate design, The content is detailed and can be downloaded by designers for reference.