The leveling device on the outrigger control box contains a bubble that shows horizontal condition of the semitrailer, and the bubble inside the large outer ring indicates the semitrailer is level. The statement is true.

• A. True
• B. False
• C. Not Sure
• D. Partially True

Answer: (A)

When setting up the semitrailer, you rely on the leveling device built into the outrigger control box. This device uses a bubble level to show how the trailer sits relative to horizontal. The design includes a bubble that reflects the overall horizontal condition, and a bubble inside a large outer ring that specifically signals when the trailer is level. So, as you adjust the outriggers, you watch the inner bubble for any tilt and aim to center the bubble in the large outer ring to confirm a level trailer. This dual-bubble setup provides a clear, reliable indication of levelness, which is why the statement is true.