Fire Control Quadrant

A Fire Control Quadrant (FCQ) is a system used in military artillery to determine the direction and elevation needed to accurately aim and fire a weapon. It consists of a quadrant, which is a quarter-circle measuring 90 degrees, and various instruments and devices.

The FCQ is typically used in conjunction with a range finder and a compass to calculate the necessary adjustments for aiming and firing artillery. The range finder is used to determine the distance to the target, while the compass is used to determine the direction.

The quadrant is marked with degree measurements, allowing the artillery crew to accurately set the elevation and direction of the weapon. By aligning the quadrant with the target and adjusting the elevation and direction accordingly, the crew can ensure that the projectile will hit the intended target.

Fire Control Quadrants are commonly used in field artillery, naval artillery, and anti-aircraft artillery systems. They are essential for achieving accurate and effective fire in military operations.