Move tool Mirror
The reflection option for the move tool allows you to select a vertex, edge or face on one side of the model and, on the opposite side, the corresponding component with a similar position will be selected and moved the same way.
Press and hold [W], and left-click in the viewport. Select [Reflection] from the marking menu. The select the axis system [worls or object] and the axis [x,y,z] along which you wish to reflect.
Note: This works for edges, vertices, and faces.
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