Which statement about the gauging device on an oil tank is true?

Which statement about the gauging device on an oil tank is true?

• A. Indicates the oil level
• B. Measures temperature
• C. Regulates pressure
• D. Monitors flow rate

Answer: (A)

The gauging device on an oil tank is there to show how much oil remains in the tank. It functions as a level indicator, often a sight glass or float gauge, that rises or falls with the oil level and provides a reading of full or empty. It does not measure temperature, regulate pressure, or monitor flow rate—those are done by separate instruments. Knowing the level helps prevent running out of oil and ensures timely refills, keeping the boiler or furnace operating reliably.

The gauging device on an oil tank is there to show how much oil remains in the tank. It functions as a level indicator, often a sight glass or float gauge, that rises or falls with the oil level and provides a reading of full or empty. It does not measure temperature, regulate pressure, or monitor flow rate—those are done by separate instruments. Knowing the level helps prevent running out of oil and ensures timely refills, keeping the boiler or furnace operating reliably.