TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9-2350-311-10 2-11 OPERATION OF FIRE CONTROL EQUIPMENT UNDER NORMAL CONDITIONS 2-11.1 M117/M117A2 Panoramic Telescope and M145/M145A1 Telescope Mount To avoid breaking electrical connections, install M117/M117A2 panoramic telescope straight up. Make sure that lenses and panoramic telescope ballistic cover window are clean. a. Installation of M117/M117A2 Panoramic Telescope Install M117/M117A2 panoramic telescope (1) and secure with two clamping catches (2). 2-135