🔍 Key Concepts

• Tank level measurement terminology used in marine engineering • Difference between instruments that measure quantity/level vs those that measure properties like heat or viscosity • Traditional shipboard terms for remote tank level indicators

💭 Think About

• Look at each choice and ask: does this device normally tell you how FULL a tank is, or does it measure some OTHER property of a fluid? • Which of these terms have you seen in connection with fuel, ballast, or cargo tanks on ships when checking levels from a central point? • Think about shore tanks and bunker tanks: what word is associated with remote level gauges that work using air pressure on the liquid surface?

✅ Before You Answer

• Eliminate any option that mainly measures temperature/heat effects rather than level • Eliminate any option that mainly measures viscosity (thickness of a fluid) rather than how much is in the tank • Focus on the option that is known as a remote tank level indicator used with compressed air or gas pressure to sense level