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Page Title:
Head Assembly Excursion and Plumbline Travel Inspection - continued |
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 TM 9-1240-375-34&P
0100 00
3.TYP
300
3.TYP
2 9 .7 5
1 .3 1
4.
72"
0
4 .7 1
4.
4 .7 1
2 9 .7 5
300
5
P L U M B L IN E
16"
T A R G E T D IS T A N C E 8 ' (F R O M O B J E C T IV E L E N S )
B L A C K L IN E S O N W H IT E B A C K G R O U N D
L IN E T H K -3 /1 6
1 fc 6 6 1
3.
Mount test target (5) on wall 8 feet (2.44 m) from azimuth test fixture (2).
4.
Rotate azimuth test fixture (2) and sight on test target (5).
5.
Check that horizontal reticle line of M137/M137A2/M137A3 telescope (1) is aligned with centered test
target (5); if not, adjust target.
3
6
7
1 fc 6 6 2
6.
Rotate azimuth knob (6) until vertical reticle line is aligned with center of test target and plumbline.
NOTE
Starting with line of sight in coincidence with a vertical target line, the line of sight
shall track the plumbline within 0.5 mil.
7.
While looking through eyeshield (7), turn elevation knob (3) clockwise as far as possible. Check that
horizontal reticle line reaches 300 mils on test target.
8.
Turn elevation knob (3) counterclockwise as far as possible. Check that horizontal reticle line reaches
300 mils on test target.
0100 00-15
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