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TM 9-1240-375-34&P
0106 00
TEST AND INSPECTION - Continued
Eyepiece Focus Inspection - Continued
10
12
11
1 fc 7 6 3
WARNING
Use sealing compound in well-ventilated area away from open flame. Sealing
compound is harmful to skin and clothing and may give off harmful vapor.
7.
If diopter scale (10) does not read 0, loosen three setscrews (11), adjust diopter scale to read 0, and
align dial pointer (12) with 0. Retighten setscrews and apply sealing compound (item 13, WP 0152 00).
NOTE
Observe focus of the reticle image during step 8. The focus should change over a
minimum range of +3 diopters to -3 diopters.
9
1 fc 7 6 4
8.
Rotate knob (9) clockwise as far as possible and note diopter scale setting. Diopter scale must read
-3 diopters or greater. Rotate counterclockwise as far as possible and note diopter scale setting.
Diopter scale must read +3 diopters or greater. If readings of -3 through +3 diopters cannot be
achieved, repeat steps 3 through 7. If proper readings are still not obtained, return to depot
maintenance.
0106 00-4

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