Which instrument is used to confirm the crane is level after deploying outriggers?

• A. Level gauge
• B. Thermometer
• C. Anemometer
• D. Ruler

Answer: (A)

To keep the crane stable during lifting, the base must be level after the outriggers are deployed. The instrument used to confirm this is the level gauge, which shows whether the crane’s base is horizontal. It can be a bubble spirit level or a digital inclinometer that centers when the unit is perfectly level. If the gauge indicates tilt, adjustments are made with the outrigger jacks or by repositioning the crane until the reading is level. The other options don’t measure tilt: a thermometer checks temperature, anemometers measure wind speed, and a ruler measures length. Ensuring level prevents tipping and helps maintain safe, controlled lifts.