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TM 9-4931-710-14&P
5-8
AND
INSPECTION
--
CONTINUED
SETTING
UP
STANDARD
--
CONTINUED
Using a 0.0001 in. (0.0025 mm) dial
indicator (13), mounted on a height
gage (14), indicate over top of dowel
pins (12) and level dovetail (9).
Note
If M139 standard is being as-
sembled, clamp only the V-block
next to the base.
Turn screws (15) to clamp collimation
standard (2) in V-block (11).
Recheck base (3) for level. If base (3) is
within 0.0002 to 0,0003 in. (0.0050 to
0.0076 mm) of level or better, leave as
is. If worse, loosen screws (15) and
repeat steps G and H.
5-21
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