The aiming circle is used to measure horizontal clockwise angles from the line of fire to the line of sight to a given aiming point.

## How does an aiming circle work?

The aiming circle is used to measure horizontal clockwise angles from the line of fire to the line of sight to a given aiming point.

What is the purpose of the M2A2 Aiming circle?

The M2A2 Aiming Circle is the primary means of orienting the cannon battery or laying weapons on the azimuth of fire.

### What is the correct placement of the near aiming post?

If the far aiming post cannot be placed at 100 meters, the near aiming post should be placed half the distance to the far post (for example, far post, 90 meters; near post, 45 meters).

How is a cannon aimed?

After ramming, the cannon would be aimed with the elevation set using a quadrant and a plummet. At 45 degrees the ball had the utmost range – about ten times the gun’s level range. Any angle above the horizontal line was called random-shot. The officer of artillery had to ensure the cannon was diligently served.

## What is azimuth of fire?

c. Azimuth of Fire (AOF)/Azimuth of Lay (AOL). The direction, expressed in mils, that a firing unit is oriented on when it occupies a position. The field artillery uses grid north as a reference point so all AOFs measured from grid north (There can be only one AOF).

How are artillery guns aimed?

The aiming circle must be set up in two minutes, then Soldiers use magnetic north to orient it. From there they use three known points to change the aiming circle’s orientation from magnetic north to grid north to fire on a target. “We do this so the guns will be accurate,” said Sgt.

### What is an aiming post?

The aiming post light aids in identifying the location of the near/far aiming post during night and low light operations. Using proper procedures, the operator will align the sight unit (M137 Panoramic Telescope) on the aiming post light to orient the weapon on the azimuth of fire.

What is considered artillery?

Definition of artillery 1 : weapons (such as bows, slings, and catapults) for discharging missiles. 2a : large bore mounted firearms (such as guns, howitzers, and rockets) : ordnance especially : such ordnance that is capable of long-range indirect fire at a target too distant to be seen.