OFFSET/SCALE group: controls the offset scale capability of situation display.FULL X0.5 switch-indicator (white): comes on and selects between full scale display andhalf scale (double area of coverage) display. Determines the scale used as base referencefor magnifier switches X2 and X4. Selection of X2 or X4 turns the FULL X0.5 S/I off.Reselection of FULL X0.5 after it is turned off will restore the display to the scale prior to X2or X4 magnification.X2 switch-indicator (yellow): comes on and selects situation display of two times fullscale.X4 switch-indicator (yellow): comes on and selects situation display of four times fullscale.