Interesting sight. What are all the "+" for? I would think the bottom square with the cross in it would be for bombing,but, what are the side "+" for? Just curious.
How to use the P-38 Gunstar Sight
The basics of it is simple:
1) It is for use in center fire planes, such as a P-38 (hence the name).
2) If the target is in the 'star' pattern, shoot!
3) The lower center box is for center bombs/rockets.
4) The '+' on the sides is for wing mounted bombs/rockets.