An _______ or _______ glass can be used to view the oil level in a sleeve bearing.

An _______ or _______ glass can be used to view the oil level in a sleeve bearing.

• A. dipstick, glass
• B. oil cup, sight
• C. thermometer, gauge
• D. cup, lens

Answer: (B)

To know the oil level in a sleeve bearing, you rely on a viewing element that shows the level directly. A sight glass acts as a clear window into the oil space, so you can read the level against marks on the glass. An oil cup, used as the oil reservoir in some bearing housings, can also work for visual checking if it’s transparent or paired with a viewing window, letting you see how much oil is present without disassembly. This direct visibility is why those two are the best choices for confirming oil level. Dipsticks are more common on engines, and a thermometer or gauge doesn’t provide a direct read of the oil height. A plain lens wouldn’t give a readable level without a proper viewing window.

To know the oil level in a sleeve bearing, you rely on a viewing element that shows the level directly. A sight glass acts as a clear window into the oil space, so you can read the level against marks on the glass. An oil cup, used as the oil reservoir in some bearing housings, can also work for visual checking if it’s transparent or paired with a viewing window, letting you see how much oil is present without disassembly. This direct visibility is why those two are the best choices for confirming oil level. Dipsticks are more common on engines, and a thermometer or gauge doesn’t provide a direct read of the oil height. A plain lens wouldn’t give a readable level without a proper viewing window.