Chemical, Pharmaceutical, Petrochemical, Power Plant, Refinery, Paper & Pulp, Sugar, Breweries, Cement Industries, etc

Chemical, Pharmaceutical, Petrochemical, Power Plant, Refinery, Paper & Pulp, Sugar, Breweries, Cement Industries, etc
These gauges are used in Laboratories and Industries by Inspecting authorities, for pressure gauge testing and Calibration.
Please advise the below