PARALLAX CHECK FOR GUNNER'S PERISCOPE M32C/M32CE1

TM 9-2350-222-20-2-1

3-5.

PERSONNEL: One

REFERENCES:

TM 9-2350-222-10 for procedures to:

Manually traverse turret and elevate/depress gun

Operate gunner's periscope M32C/M32CE1

EQUIPMENT LOCATION INFORMATION:

EQUIPMENT

FOLDOUT

CALLOUT

Gunner's Periscope

EQUIPMENT CONDITION: Sighting system components installed

GENERAL INSTRUCTIONS:

When placing gun on target, move gun to target from low to high and

from right to left, to keep backlash out of sighting system. If required

gun position is passed (over travel), move gun below or to right of

target and again move gun to target.

FRAME 1

PROCEDURE

STEP

While looking through daylight eyepiece of gunner's periscope , manually move gun until reticle aiming

cross is Layed on some target 600 meters out (TM-10).

Adjust diopter on periscope for sharpest focus (TM-10).

NOTE

Parallax is the presence of apparent movement between reticle

and the target aiming point when the observer's head is moved

while viewing through eyepiece.

With head against brow pad and looking directly into reticle, move the head approximately 1/4 inch

up, down, left, and right.

If there is any apparent movement (parallax) between periscope reticle and target aiming point

perform parallax adjustment (para 3-8).

END OF TASK

Para 3-5

Change 1 3-27