Amazon.com: Glass Manometer, U-Tube - Built in Stopcock, Mounted on Back Plate with Printed Scale, 80-0-80 Scale with 2mm Subdivisions - Eisco Labs : Toys & Games
Glass Manometer Tube Mounted Manufacturer, Supplier & Exporter in India, Nigeria, Ethiopia, Egypt, Democratic Republic of the Congo, South Africa, Tanzania, Kenya, Algeria, Uganda, Sudan, Morocco, Ghana, Mozambique, Ivory Coast, Madagascar, Angola,