What is a manometer? And how is this used to measure pressure?

Related questions

• Question #63929
• What force on a floating object displaces 0.6 m3 of water?
• At what depth below the surface of oil, relative density 0.8, will the oil produce a pressure of...
• What will be the gauge pressure and the absolute pressure of water at depth 12m below the surface?
• What happens to pressure if it is concentrated into a small area?
• How is pressure related to kinetic energy?
• How does pressure affect the boiling point?
• Question #61797
• Question #c9625
• Question #5fbd7