TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P 2-17. M115 PANORAMIC TELESCOPE FINAL INSPECTION INSTRUCTIONS (CONT). SETTING UP AZIMUTH TESTING FIXTURE (CONT) 10 Set surface gage (13) on adapter fixture (6). 11 Adjust height of collimator telescope holder (12) so reticle crossline intersection is superimposed between collimator telescope (11) and projector collimator (10). Secure height of telescope holder. 12 Suspend a plumbline off to one side of projector collimator (10). 13 Install parallax shield (14) to collimator telescope (11). 14 Turn surface gage (13) and revolve collimator telescope (11) until the vertical reticle line is superimposed on plumbline. Lock collimator telescope securely. 15 Remove plumbline and parallax shield (14). 16 Position surface gage (13) so line of sight is obtained with projector collimator (10) and collimator telescope (11). 17 Rotate projector collimator (10) until vertical reticle line coincides with preplumbed reticle of collimator telescope (11). 18 Lock projector collimator (10) in this position and remove gage (13) from adapter fixture (6). 2-60