Final answer:
The circular level is not used for coarse leveling on the Aiming Circle. The Aiming Circle is a military instrument used to measure angles in the horizontal and vertical planes.
Step-by-step explanation:
The circular level is not used for coarse leveling on the Aiming Circle. The circular level you mentioned is characteristic of fields that use center-pivot irrigation, not for leveling the Aiming Circle. The Aiming Circle, also known as the artillery compass, is a military instrument used to measure angles in the horizontal and vertical planes.