How many stadia lines are in the WFOV and what do they indicate?

• A. There are four stadia lines, indicating range thresholds
• B. There are two stadia lines, and if the vehicle is smaller than the stadia lines from the flank then the vehicle is not in range
• C. There are two lines; size does not affect range
• D. There are three lines; range is determined by width

Answer: (B)

Stadia lines in the WFOV sight are used to gauge range by the apparent size of the target. There are two stadia lines, and they mark the size the target must reach to be within engagement range. When you view a vehicle from the flank, if its width is smaller than the space between those two lines, the vehicle is outside effective range. As the target’s apparent width grows to fill or exceed that space, you’ve reached the range where a shot would be considered within range.