TM-9-1240-401-34-P
TELESCOPE MOUNT M146: M118A2 AND M118A3; TELESCOPE MOUNT M145: M145A1; PANORAMIC TELESCOPE: M117 AND M117A2; FIRE CONTROL QUADRANT: M15; PERISCOPE: M42
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
JULY 1993
TM-9-1240-401-34-P - Page 243 of 590
TM 9-1240-401-34&P
Item No.
Item To Be Inspected
Procedures
9
CORRECTION COUNTERS
a.
Turn correction knob (6) clockwise to stop and check that upper
correction counter registers at least 55 mils. Turn correction knob
counterclockwise to stop and check that lower correction counter
registers at least 55 mils.
b.
Turn correction knob (6) clockwise to register 25 mils on upper
correction counter. Check that reading on elevation counter (8) is
reduced 25 + 0.2 mils. Turn correction counter clockwise to
register 50 mils on upper correction counter. Check that reading
on elevation counter is reduced 50 + 0.2 mils. Turn correction
knob counterclockwise to register 25 and 50 mils, respectively, on
lower correction counter. Check that reading on elevation counter
increases 25 + 0.2 and 50 + 0.2 mils, respectively.
c.
Check that all numerals aline within 1/16 inch (1.588 mm).
Change 1
5.1-9
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