TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P 3-12. FINAL INSPECTION INSTRUCTIONS (CONT). SETTING UP AND ADJUSTING TELESCOPE TEST FIXTURE (CONT) NOTE Check that vertical line of crosshair in dioptometer is still alined with plumbline. If not, realine dioptometer. 10 Turn on light switch (8). 11 Set collimator projector objective (9) to infinity. 12 Loosen lock knob (10). Raise or lower support (4) until axis of dioptometer is the same height as collimator projector (11). Tighten lock knob (10). 13 Loosen four screws (12) and rotate collimator projector (11) until center horizontal line of collimator projector reticle is plumb with horizontal line of dioptometer (5). 14 Tighten four screws (12) and check that horizontal line of collimator projector reticle and horizontal line of dioptometer (5) are plumb. If not, repeat step 13. 15 Remove V-block (6) and dioptometer (5). 16 Loosen lock knob (10). 17 Remove support (4) from telescope test fixture (1). 3-22