Which type of level takes the least amount of time to set up?

The type of level that takes the least amount of time to set up is the automatic level. Automatic levels are designed to quickly and easily establish a horizontal plane. They consist of a telescope mounted on a base that includes a leveling mechanism. Once the instrument is set up on a stable surface and leveled approximately by hand, the automatic leveling feature does the rest. It self-levels and quickly provides accurate readings.

In contrast, other types of levels require more manual adjustments and setups. For example, a spirit level requires the user to visually align the bubble within the vial to ensure it is level, which can take more time depending on the user's skill. A laser level may require positioning and securing the laser device before it can be used, taking additional time to ensure it is correctly set up and aimed. A water level, while simple in operation, requires the use of flexible tubing to create a reference level, which can be time-consuming and may not be as precise or easy to use in all conditions.

Therefore, the automatic level is preferred for its efficiency and speed in achieving a level line, making it ideal for quick setups in construction and surveying tasks.