The device is in the center shows that P is a parameter Course goals.

If P = 0, this means the purpose of flying to the missile guidance station!

The right instrument showing the target height, S-125 Neva maximum of 18 km.

Left the unit running speed of the target.

The screen display range detection distance of 80 km, but the capture of only 50 km and tracking.

Very similar to the Dvina and Volkhov there are the same devices.

1. Speed of the target.
2. Course setting goals.
3. Target height.

As I understand it all!

Pictures also did great in Ashampoo Snap like me!