Manual

1.5. Design and operation of sight and its component parts

1.5.1. The sniper optical sight PSO-1 (Fig. 7) consists of the

following main parts:

• body;

• objective;

• eyepiece;

• blind;

• eye shield;

• knob with the scale of sight angles;

• knob with the scale of deflection corrections;

• handle;

• colored glass;

• guide;

• supply source;

• lamp;

• cap.

The objective in a mount with a collapsible blind is screwed into the

body. The eyepiece in assembly with the eye shield is screwed into the

body from another end.

On the top of the body is a knob with a sight angle scale plotted on

its cylindrical portion. Inscriptions "BBepx" š "Upward", "BHN3" š

"Downward", "CTn" š "MPI" and arrows, indicating the direction of the

knob rotation when adjusting the sight are plotted on the knob nut.

The sight angle scale is provided with ten divisions (from 0 to 10).

The value of the scale division equals to 100 m. Beginning from

division 3 it is possible to set sight angles every 50 m using the knob

retainer.

On the right side of the body there is a knob with the scale of

deflection corrections. The cylindrical portion of the knob is provided

with 21 divisions (from 0 to 10 in both directions).

Dash lines and digits located to the right from 0 are of a black

color, and those located to the left from 0 are of a red color.

The value of the scale division equals to 0š01. Deflection

corrections may be set every 0-00.5 by means of the knob retainer.

Fig. 7. Sight PSO-1:

1 - blind; 2 - objective; 3 - colored glass; 4

- handle; 5 - nut; 6 - knob; 7 - body; 8 -

eyepiece; 9 - eye shield; 10 - cap; 11 – cap