B. MECHANICAL FUNCTIONS
The mechanical functions of the ATN NVM-14 allow for dif- ferences in the physical features of individual operators and provide for operating the system. These functions include the On/Off/On IR control eye relief (see Section III Mounting Pro- cedures – Headmount Adjustments), diopter adjustment , and objective lens focus . These mechanical controls are identi- fied in Figure 4-3.
Figure 4-3
Mechanical Functions
