TM 5-6675-328-14
(c)
Rotate upper section until reticle images of TI and AS-1 are in approximate alinement and tighten
setscrews.
(d)
Use tangent screws to bring reticle images of TI and AS-1 into register.
e. Aline TI with OPC.
NOTE
Perform the following operation only if the optical plummet collimator is to be used for calibration. After
using the optical plummet collimator for calibration, realine the collimators in accordance with step d,
above.
(1)
Check that OPC eyepiece is centered in the adapter tube by eye.
(2)
Observe OPC through TI optical plummet.
(3)
Focus plummet eyepiece on OPC target.
(4)
Position TI with precision slides to register reticle and target pattern.
(5)
Rotate TI 180° using Ultradex.
NOTE
Do not use the OPC control handle to position the OPC in the test post. The OPC control handle is used
only with a TI capable of focusing on the infinity reticle.
(6)
Use precision slides on Ultradex to remove one-half of reticle error.
(7)
Rotate TI 180° using Ultradex.
(8)
If register error exists, use TI optical plummet to remove one-half of error.
(9)
Rotate TI 180° using Ultradex. If reticles are out of register, repeat steps (4) thru (8) until all error is removed.
(10)
Calibrator is now alined to permit calibration of instruments.
f. Aline leveling mirror. After alinement, the leveling mirror may be used to level instruments that do not have a level
vial.
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